diff --git a/lexer/comments.mj b/lexer/comments.mj
new file mode 100644
index 0000000000000000000000000000000000000000..e94c66343c2d6d515c2669ea340013c8dcb79dcc
--- /dev/null
+++ b/lexer/comments.mj
@@ -0,0 +1,5 @@
+/* simple comment */
+/* Multiline comment
+*/
+/*/*/* Nested comment */*/*/
+// This is no comment
\ No newline at end of file
diff --git a/lexer/comments.mj.out b/lexer/comments.mj.out
new file mode 100644
index 0000000000000000000000000000000000000000..b4db7db6bdf1967134ff2c829aaaa1fe05e8ecbe
--- /dev/null
+++ b/lexer/comments.mj.out
@@ -0,0 +1,11 @@
+*
+identifier Nested
+identifier comment
+*
+/
+/
+identifier This
+identifier is
+identifier no
+identifier comment
+EOF
\ No newline at end of file
diff --git a/lexer/eof.mj b/lexer/eof.mj
new file mode 100644
index 0000000000000000000000000000000000000000..f6195e7fe7b5a889e8c5275e26a27bde97dffc87
--- /dev/null
+++ b/lexer/eof.mj
@@ -0,0 +1 @@
+EOF
\ No newline at end of file
diff --git a/lexer/eof.mj.out b/lexer/eof.mj.out
new file mode 100644
index 0000000000000000000000000000000000000000..96b01623b82dfa0ae638b9a608a1fa563afc75b0
--- /dev/null
+++ b/lexer/eof.mj.out
@@ -0,0 +1,2 @@
+identifier EOF
+EOF
\ No newline at end of file
diff --git a/lexer/invalidKeywords.mj b/lexer/invalidKeywords.mj
new file mode 100644
index 0000000000000000000000000000000000000000..18b48d8e9d7866e5bb39694d5c6f3231989686de
--- /dev/null
+++ b/lexer/invalidKeywords.mj
@@ -0,0 +1,4 @@
+classs ddouble
+ {
+     integer synchronised = volatil instance of nul;
+ }
\ No newline at end of file
diff --git a/lexer/invalidKeywords.mj.out b/lexer/invalidKeywords.mj.out
new file mode 100644
index 0000000000000000000000000000000000000000..446dd538a08d12a3257dc4280f056dab21d7e3ab
--- /dev/null
+++ b/lexer/invalidKeywords.mj.out
@@ -0,0 +1,13 @@
+identifier classs
+identifier ddouble
+{
+identifier integer
+identifier synchronised
+=
+identifier volatil
+identifier instance
+identifier of
+identifier nul
+;
+}
+EOF
\ No newline at end of file
diff --git a/lexer/nestedClass.mj b/lexer/nestedClass.mj
new file mode 100644
index 0000000000000000000000000000000000000000..adf0db361bedd5476eacfcc06d31f4df9c7392b0
--- /dev/null
+++ b/lexer/nestedClass.mj
@@ -0,0 +1,10 @@
+class class1 {
+    class class2 {
+        class class3 {
+            class class4 {
+                class class5 {
+                }
+            }
+        }
+    }
+}
diff --git a/lexer/nestedClass.mj.out b/lexer/nestedClass.mj.out
new file mode 100644
index 0000000000000000000000000000000000000000..6b5cad127d8e7dbb4688865f945756afa11c83cd
--- /dev/null
+++ b/lexer/nestedClass.mj.out
@@ -0,0 +1,21 @@
+class
+identifier class1
+{
+class
+identifier class2
+{
+class
+identifier class3
+{
+class
+identifier class4
+{
+class
+identifier class5
+{
+}
+}
+}
+}
+}
+EOF
\ No newline at end of file
diff --git a/lexer/recursion.mj b/lexer/recursion.mj
new file mode 100644
index 0000000000000000000000000000000000000000..69a3cd87f1f8ca790c2e76509c30c665155f2540
--- /dev/null
+++ b/lexer/recursion.mj
@@ -0,0 +1,3 @@
+void a (void) {
+    a();
+}
\ No newline at end of file
diff --git a/lexer/recursion.mj.out b/lexer/recursion.mj.out
new file mode 100644
index 0000000000000000000000000000000000000000..01ae1cc8c87a9a24b4e4384050ee61611d48ad88
--- /dev/null
+++ b/lexer/recursion.mj.out
@@ -0,0 +1,12 @@
+void 
+identifier a 
+(
+void
+)
+{
+identifier a
+(
+)
+;
+}
+EOF
\ No newline at end of file