1 2 3 4 5 6
T1:={[i,j]->[i,j,0]}; T2:={[i,j]->[i,j,1]}; R1:={[1:9,1:9]}; R2:={[5,1:9]}; codegen T1:R1,T2:R2; codegen 2 T1:R1,T2:R2;