@1
MOV UP ACC
ADD ACC
SUB 1
L: MOV ACC DOWN
SUB 4
JGZ P
MOV 0 ACC
P: MOV ACC DOWN
MOV -2 DOWN
SUB 4
JGZ L
MOV 0 DOWN
MOV 0 DOWN
MOV 1 DOWN

@4
MOV 0 ACC
ADD UP
ADD UP
JRO UP
MOV ACC DOWN

@8
MOV UP DOWN
