operator: + 
operator: - 
operator: * 
operator: / 
operator: = 
operator: > 
operator: >= 
operator: < 
operator: <= 
operator: == 
operator: != 
parenthesis: ( 
parenthesis: ) 
semicolumn: ; 
keyword: if 
keyword: then 
keyword: else 
keyword: endif 
keyword: while 
keyword: do 
keyword: endwhile 
keyword: print 
keyword: newline 
integer: 345 
New Identifier "id1" 
New Identifier "id2" 
Identifier "id1" already in symbol table 
quoted string: hello, how are you?