1 var 1 2 var 8 3 var 8 4 var 8 5 cond 8 1 2 3 6 cond 8 1 2 4 7 ult 1 -5 -6 8 ult 1 -2 -2 9 ult 1 -3 -4 10 cond 1 1 8 9 11 ne 1 7 10 12 root 1 11