@4
MOV ACC, RIGHT
ADD 1

@5
MOV LEFT, DOWN
MOV 7, ACC
M: MOV 3, DOWN
SUB 1
MOV 3, DOWN
JNZ M
MOV 3, DOWN
MOV -1, DOWN

@8
MOV 0, RIGHT
MOV 8, ACC
M: MOV 3, RIGHT
SUB 1
MOV 3, RIGHT
JNZ M

@9
MOV LEFT, DOWN
MOV UP, DOWN
