--- 1 ---
5
SyntaxError: Expected '/'
SyntaxError: Expected '/'
--- 2 ---
4
SyntaxError: Expected '/'
SyntaxError: Expected '/'
SyntaxError: Expected '/'
SyntaxError: Expected '/'
SyntaxError: Syntax error in regular expression
4
5
--- 3 ---
SyntaxError: Expected '/'
SyntaxError: Expected '/'
SyntaxError: Expected '/'
SyntaxError: Expected '/'
5
SyntaxError: Expected ']' in regular expression
SyntaxError: Expected '/'
--- 4 ---
9
9
5
5
4
5
--- 5 ---
5
5
5
6
6
5