18
Left_Bracket :[
Right_Bracket :]
Left_Brace :{
Right_Brace :}
Left_Parenthesis :(
Right_Parenthesis :)
Left_Anchor :^
Right_Anchor :$
Minus_Sign :-
Plus_Sign :+
Fullstop :.
Vertical_Line :|
Asterisk :*
Question_Mark :?
Escape :\
Colon ::
Equals_Mark :=
Comma :,