1 operand-1
2? IS
3? NOT
3.1 GREATER
3.1.1? THAN
3.1  > 
3.1 LESS
3.1.1? THAN
3.1  < 
3.1 EQUAL
3.1.1? TO
3.1  = 
3 GREATER
3.1? THAN
3.2 OR EQUAL
3.3? TO
3  >= 
3 LESS
3.1? THAN
3.2 OR EQUAL
3.3? TO
3  <= 
4 operand-2