@1
SUB UP
MOV 1, RIGHT
MOV UP, RIGHT
L: ADD 1
MOV ACC, RIGHT
JLZ L

@2
MOV ACC, DOWN
JRO LEFT
MOV LEFT, ACC

@6
MOV UP, DOWN

@10
L: MOV UP, DOWN
SUB 1
JGZ M
MOV -1, DOWN
SWP
MOV 0, DOWN
MOV ACC, DOWN
ADD 1
SWP
MOV 15, ACC
M: MOV UP, DOWN
