ac	comment.txt	/*ac*
b:comment_first_col	comment.txt	/*b:comment_first_col*
comment.txt	comment.txt	/*comment.txt*
g:comment_first_col	comment.txt	/*g:comment_first_col*
gcc	comment.txt	/*gcc*
ic	comment.txt	/*ic*
o_gc	comment.txt	/*o_gc*
v_ac	comment.txt	/*v_ac*
v_gc	comment.txt	/*v_gc*
v_ic	comment.txt	/*v_ic*