1 array 1 1
2 var 1
3 var 1
4 and 1 2 3
5 var 1
6 var 1
7 and 1 -5 -6
8 write 1 1 1 4 -7
9 var 1
10 var 1
11 and 1 -9 -10
12 and 1 9 10
13 and 1 -11 -12
14 read 1 8 13
15 root 1 14