(1, LITERAL, "print")
(1, OPEN_BRACKET)
(1, STRING, "a")
(1, CLOSE_BRACKET)
(1, SEMICOLON)
(3, FUNCTION)
(3, LITERAL, "wusi")
(3, OPEN_BRACKET)
(3, LITERAL, "b")
(3, CLOSE_BRACKET)
(4, OPEN_CURVED_BRACKET)
(5, LITERAL, "print")
(5, OPEN_BRACKET)
(5, STRING, "b")
(5, CLOSE_BRACKET)
(5, SEMICOLON)
(6, RETURN)
(6, SEMICOLON)
(7, LITERAL, "print")
(7, OPEN_BRACKET)
(7, STRING, "c")
(7, CLOSE_BRACKET)
(7, SEMICOLON)
(8, CLOSE_CURVED_BRACKET)
(10, LITERAL, "print")
(10, OPEN_BRACKET)
(10, STRING, "d")
(10, CLOSE_BRACKET)
(10, SEMICOLON)
(11, EOF)