1 const 8 01000101 2 const 8 10101010 3 zero 8 4 var 8 5 and 8 1 4 6 and 8 5 2 7 and 8 3 4 8 eq 1 6 7 9 and 8 1 4 10 and 8 2 5 11 eq 1 10 7 12 or 1 -8 -11 13 root 1 12