@0
MOV RIGHT, ACC
SUB 1
MOV ACC, RIGHT

@1
MOV UP, ACC
MOV ACC, LEFT
MOV ACC, RIGHT
MOV UP, ACC
SUB LEFT
MOV ACC, RIGHT

@2
MOV LEFT, ACC
JEZ B
L: MOV UP, NIL
SUB 1
JNZ L
B: MOV LEFT, ACC
E: MOV UP, DOWN
SUB 1
JNZ E
MOV NIL, DOWN
F: MOV UP, ACC
JNZ F

@6
MOV UP, DOWN

@9
MOV UP, DOWN
