diff --git a/contrib/nitcc/tests/amb.input b/contrib/nitcc/tests/amb.input
new file mode 100644
index 0000000000..074d1eeb40
--- /dev/null
+++ b/contrib/nitcc/tests/amb.input
@@ -0,0 +1 @@
+id
diff --git a/contrib/nitcc/tests/amb.sablecc b/contrib/nitcc/tests/amb.sablecc
new file mode 100644
index 0000000000..bbe895fe49
--- /dev/null
+++ b/contrib/nitcc/tests/amb.sablecc
@@ -0,0 +1,4 @@
+Grammar amb;
+Parser
+Ignored #10, #32;
+e = 'id' | e | e;
diff --git a/contrib/nitcc/tests/amb2.input b/contrib/nitcc/tests/amb2.input
new file mode 100644
index 0000000000..7d5c7b2b5e
--- /dev/null
+++ b/contrib/nitcc/tests/amb2.input
@@ -0,0 +1 @@
+-0+
diff --git a/contrib/nitcc/tests/amb2.sablecc b/contrib/nitcc/tests/amb2.sablecc
new file mode 100644
index 0000000000..ad1d48f5a9
--- /dev/null
+++ b/contrib/nitcc/tests/amb2.sablecc
@@ -0,0 +1,6 @@
+Grammar amb;
+Parser
+Ignored #10, #32;
+e = '-' a | b '+' | '0';
+a = e ;
+b = e ;
diff --git a/contrib/nitcc/tests/amb3.input b/contrib/nitcc/tests/amb3.input
new file mode 100644
index 0000000000..b2901ea97c
--- /dev/null
+++ b/contrib/nitcc/tests/amb3.input
@@ -0,0 +1 @@
+a b
diff --git a/contrib/nitcc/tests/amb3.sablecc b/contrib/nitcc/tests/amb3.sablecc
new file mode 100644
index 0000000000..bdc84b7444
--- /dev/null
+++ b/contrib/nitcc/tests/amb3.sablecc
@@ -0,0 +1,5 @@
+Grammar amb;
+Parser
+Ignored #10, #32;
+e = x 'b' | 'a' x ;
+x = 'a' | 'b';
diff --git a/contrib/nitcc/tests/eq.input b/contrib/nitcc/tests/eq.input
new file mode 100644
index 0000000000..e3280dd06b
--- /dev/null
+++ b/contrib/nitcc/tests/eq.input
@@ -0,0 +1 @@
+id=id=id
diff --git a/contrib/nitcc/tests/eq.sablecc b/contrib/nitcc/tests/eq.sablecc
new file mode 100644
index 0000000000..7f1e196143
--- /dev/null
+++ b/contrib/nitcc/tests/eq.sablecc
@@ -0,0 +1,9 @@
+Grammar eq;
+Parser
+Ignored #10, #32;
+e =
+	var '=' e |
+	var ;
+c =
+	e '=' e ;
+var = 'id' ;
diff --git a/contrib/nitcc/tests/eq2.input b/contrib/nitcc/tests/eq2.input
new file mode 100644
index 0000000000..e3280dd06b
--- /dev/null
+++ b/contrib/nitcc/tests/eq2.input
@@ -0,0 +1 @@
+id=id=id
diff --git a/contrib/nitcc/tests/eq2.sablecc b/contrib/nitcc/tests/eq2.sablecc
new file mode 100644
index 0000000000..7c5db34ec1
--- /dev/null
+++ b/contrib/nitcc/tests/eq2.sablecc
@@ -0,0 +1,10 @@
+Grammar eq;
+Parser
+Ignored #10, #32;
+e =
+	var '=' e |
+	'assert' c |
+	var ;
+c =
+	e '=' e ;
+var = 'id' ;
diff --git a/contrib/nitcc/tests/eq3.input b/contrib/nitcc/tests/eq3.input
new file mode 100644
index 0000000000..e3280dd06b
--- /dev/null
+++ b/contrib/nitcc/tests/eq3.input
@@ -0,0 +1 @@
+id=id=id
diff --git a/contrib/nitcc/tests/eq3.sablecc b/contrib/nitcc/tests/eq3.sablecc
new file mode 100644
index 0000000000..33bb02da82
--- /dev/null
+++ b/contrib/nitcc/tests/eq3.sablecc
@@ -0,0 +1,10 @@
+Grammar eq;
+Parser
+Ignored #10, #32;
+e =
+	var '=' e |
+	c |
+	var ;
+c =
+	e '=' e ;
+var = 'id' ;
diff --git a/contrib/nitcc/tests/geom.input b/contrib/nitcc/tests/geom.input
new file mode 100644
index 0000000000..4b169b1f5a
--- /dev/null
+++ b/contrib/nitcc/tests/geom.input
@@ -0,0 +1 @@
+triangle 0x0 0@0 centre circle 0x0 0@0
diff --git a/contrib/nitcc/tests/geom.sablecc b/contrib/nitcc/tests/geom.sablecc
new file mode 100644
index 0000000000..8026a54e76
--- /dev/null
+++ b/contrib/nitcc/tests/geom.sablecc
@@ -0,0 +1,8 @@
+Grammar geom;
+Parser
+Ignored #10, #32;
+forme =
+	'triangle' point point point |
+	'circle' point point ;
+point = num 'x' num | num '@' num | 'centre' forme;
+num = '0';
diff --git a/contrib/nitcc/tests/lg.input b/contrib/nitcc/tests/lg.input
new file mode 100644
index 0000000000..20afe73e05
--- /dev/null
+++ b/contrib/nitcc/tests/lg.input
@@ -0,0 +1 @@
+<0><0>>
diff --git a/contrib/nitcc/tests/lg.input2 b/contrib/nitcc/tests/lg.input2
new file mode 100644
index 0000000000..9b09d7781c
--- /dev/null
+++ b/contrib/nitcc/tests/lg.input2
@@ -0,0 +1 @@
+<0><0>0
diff --git a/contrib/nitcc/tests/lg.sablecc b/contrib/nitcc/tests/lg.sablecc
new file mode 100644
index 0000000000..c2a1e74804
--- /dev/null
+++ b/contrib/nitcc/tests/lg.sablecc
@@ -0,0 +1,6 @@
+Grammar lg;
+Parser
+Ignored #10, #32;
+e = e '<' a | e '>' a | a ;
+a = n | '<' e '>' ;
+n = '0' ;
diff --git a/contrib/nitcc/tests/lg2.input b/contrib/nitcc/tests/lg2.input
new file mode 100644
index 0000000000..20afe73e05
--- /dev/null
+++ b/contrib/nitcc/tests/lg2.input
@@ -0,0 +1 @@
+<0><0>>
diff --git a/contrib/nitcc/tests/lg2.input2 b/contrib/nitcc/tests/lg2.input2
new file mode 100644
index 0000000000..9b09d7781c
--- /dev/null
+++ b/contrib/nitcc/tests/lg2.input2
@@ -0,0 +1 @@
+<0><0>0
diff --git a/contrib/nitcc/tests/lg2.sablecc b/contrib/nitcc/tests/lg2.sablecc
new file mode 100644
index 0000000000..4277f3c56f
--- /dev/null
+++ b/contrib/nitcc/tests/lg2.sablecc
@@ -0,0 +1,5 @@
+Grammar lg;
+Parser
+Ignored #10, #32;
+e = e '<' e | e '>' e | n | '<' e '>' ;
+n = '0' ;
diff --git a/contrib/nitcc/tests/sav/amb.input.res b/contrib/nitcc/tests/sav/amb.input.res
new file mode 100644
index 0000000000..e8b4706101
--- /dev/null
+++ b/contrib/nitcc/tests/sav/amb.input.res
@@ -0,0 +1,4 @@
+Start
+  e_0
+    'id'@(1:1-1:3)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/amb.res b/contrib/nitcc/tests/sav/amb.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/amb.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/amb2.input.res b/contrib/nitcc/tests/sav/amb2.input.res
new file mode 100644
index 0000000000..39f373159e
--- /dev/null
+++ b/contrib/nitcc/tests/sav/amb2.input.res
@@ -0,0 +1,10 @@
+Start
+  e_1
+    b
+      e_0
+        '-'@(1:1-1:2)
+        a
+          e_2
+            '0'@(1:2-1:3)
+    '+'@(1:3-1:4)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/amb2.res b/contrib/nitcc/tests/sav/amb2.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/amb2.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/amb3.res b/contrib/nitcc/tests/sav/amb3.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/amb3.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/eq.input.res b/contrib/nitcc/tests/sav/eq.input.res
new file mode 100644
index 0000000000..7e18e33f4b
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq.input.res
@@ -0,0 +1,13 @@
+Start
+  e_0
+    var
+      'id'@(1:1-1:3)
+    '='@(1:3-1:4)
+    e_0
+      var
+        'id'@(1:4-1:6)
+      '='@(1:6-1:7)
+      e_1
+        var
+          'id'@(1:7-1:9)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/eq.res b/contrib/nitcc/tests/sav/eq.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/eq2.input.res b/contrib/nitcc/tests/sav/eq2.input.res
new file mode 100644
index 0000000000..b7528645f3
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq2.input.res
@@ -0,0 +1,13 @@
+Start
+  e_0
+    var
+      'id'@(1:1-1:3)
+    '='@(1:3-1:4)
+    e_0
+      var
+        'id'@(1:4-1:6)
+      '='@(1:6-1:7)
+      e_2
+        var
+          'id'@(1:7-1:9)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/eq2.res b/contrib/nitcc/tests/sav/eq2.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq2.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/eq3.input.res b/contrib/nitcc/tests/sav/eq3.input.res
new file mode 100644
index 0000000000..b7528645f3
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq3.input.res
@@ -0,0 +1,13 @@
+Start
+  e_0
+    var
+      'id'@(1:1-1:3)
+    '='@(1:3-1:4)
+    e_0
+      var
+        'id'@(1:4-1:6)
+      '='@(1:6-1:7)
+      e_2
+        var
+          'id'@(1:7-1:9)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/eq3.res b/contrib/nitcc/tests/sav/eq3.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/eq3.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/geom.input.res b/contrib/nitcc/tests/sav/geom.input.res
new file mode 100644
index 0000000000..516cc64e5d
--- /dev/null
+++ b/contrib/nitcc/tests/sav/geom.input.res
@@ -0,0 +1,32 @@
+Start
+  forme_0
+    'triangle'@(1:1-1:9)
+    point_0
+      num
+        '0'@(1:10-1:11)
+      'x'@(1:11-1:12)
+      num
+        '0'@(1:12-1:13)
+    point_1
+      num
+        '0'@(1:14-1:15)
+      '@'@(1:15-1:16)
+      num
+        '0'@(1:16-1:17)
+    point_2
+      'centre'@(1:18-1:24)
+      forme_1
+        'circle'@(1:25-1:31)
+        point_0
+          num
+            '0'@(1:32-1:33)
+          'x'@(1:33-1:34)
+          num
+            '0'@(1:34-1:35)
+        point_1
+          num
+            '0'@(1:36-1:37)
+          '@'@(1:37-1:38)
+          num
+            '0'@(1:38-1:39)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/lg.input.res b/contrib/nitcc/tests/sav/lg.input.res
new file mode 100644
index 0000000000..36b1985027
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg.input.res
@@ -0,0 +1,19 @@
+Start
+  e_2
+    a_1
+      '<'@(1:1-1:2)
+      e_1
+        e_2
+          a_0
+            n
+              '0'@(1:2-1:3)
+        '>'@(1:3-1:4)
+        a_1
+          '<'@(1:4-1:5)
+          e_2
+            a_0
+              n
+                '0'@(1:5-1:6)
+          '>'@(1:6-1:7)
+      '>'@(1:7-1:8)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/lg.input2.res b/contrib/nitcc/tests/sav/lg.input2.res
new file mode 100644
index 0000000000..f825a5aa70
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg.input2.res
@@ -0,0 +1,19 @@
+NParserError@(2:1-2:1)=''
+Nodes[Node]
+  '<'@(1:1-1:2)
+  e_2
+    a_0
+      n
+        '0'@(1:2-1:3)
+  '>'@(1:3-1:4)
+  '<'@(1:4-1:5)
+  e_1
+    e_2
+      a_0
+        n
+          '0'@(1:5-1:6)
+    '>'@(1:6-1:7)
+    a_0
+      n
+        '0'@(1:7-1:8)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/lg.res b/contrib/nitcc/tests/sav/lg.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg.res
@@ -0,0 +1 @@
+Error: there is conflicts
diff --git a/contrib/nitcc/tests/sav/lg2.input.res b/contrib/nitcc/tests/sav/lg2.input.res
new file mode 100644
index 0000000000..30257925c5
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg2.input.res
@@ -0,0 +1,15 @@
+NParserError@(2:1-2:1)=''
+Nodes[Node]
+  '<'@(1:1-1:2)
+  e_2
+    n
+      '0'@(1:2-1:3)
+  '>'@(1:3-1:4)
+  e_3
+    '<'@(1:4-1:5)
+    e_2
+      n
+        '0'@(1:5-1:6)
+    '>'@(1:6-1:7)
+  '>'@(1:7-1:8)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/lg2.input2.res b/contrib/nitcc/tests/sav/lg2.input2.res
new file mode 100644
index 0000000000..f6b978e66b
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg2.input2.res
@@ -0,0 +1,17 @@
+NParserError@(2:1-2:1)=''
+Nodes[Node]
+  '<'@(1:1-1:2)
+  e_2
+    n
+      '0'@(1:2-1:3)
+  '>'@(1:3-1:4)
+  '<'@(1:4-1:5)
+  e_1
+    e_2
+      n
+        '0'@(1:5-1:6)
+    '>'@(1:6-1:7)
+    e_2
+      n
+        '0'@(1:7-1:8)
+  Eof@(2:1-2:1)=''
diff --git a/contrib/nitcc/tests/sav/lg2.res b/contrib/nitcc/tests/sav/lg2.res
new file mode 100644
index 0000000000..05b05f7966
--- /dev/null
+++ b/contrib/nitcc/tests/sav/lg2.res
@@ -0,0 +1 @@
+Error: there is conflicts