1 START file-name-1
2? KEY
2.1? IS
2.2 EQUAL
2.2.1? TO
2.2  = 
2.2 LESS
2.2.1? THAN
2.2  < 
2.2 GREATER
2.2.1? THAN
2.2  > 
2.2 NOT LESS
2.2.1? THAN
2.2 NOT < 
2.2 NOT GREATER
2.2.1? THAN
2.2 NOT > 
2.2 LESS
2.2.1? THAN
2.2.2 OR EQUAL
2.2.3? TO
2.2  <= 
2.2 GREATER
2.2.1? THAN
2.2.2 OR EQUAL
2.2.3? TO
2.2  >= 
2.3 data-name-1
3? INVALID
3.1? KEY
3.2 imperative-statement-1
4? NOT INVALID
4.1? KEY
4.2 imperative-statement-2
5? END-START