@1
MOV UP DOWN
MOV DOWN ACC
JLZ C
L: MOV ACC DOWN
MOV -1 DOWN
SUB 16
JGZ L
C: ADD 10
JEZ Z
SUB 4
JEZ Z
MOV 1 DOWN
MOV -1 DOWN
Z: MOV 0 DOWN
MOV 1 DOWN

@4
MOV UP ACC
ADD ACC
ADD ACC
SUB 6
MOV ACC UP
MOV 0 ACC
ADD UP
JRO UP
MOV ACC DOWN

@8
MOV UP DOWN
