@0
MOV 0 LEFT
MOV 0 LEFT
MOV 0 LEFT
MOV 0 LEFT
MOV 4 ACC
L:MOV UP DOWN
SAV
SUB UP
MOV ACC DOWN
SWP
SUB DOWN
JRO DOWN
MOV UP DOWN
JMP L

@3
S:MOV RIGHT ACC
MOV ACC RIGHT
JEZ D
JGZ F
B:MOV UP DOWN
ADD 1
JLZ B
JMP D
F:MOV DOWN UP
SUB 1
JGZ F
D:MOV UP RIGHT
MOV RIGHT UP

@4
S:MOV UP ACC
MOV UP LEFT
MOV LEFT UP
JEZ W
MOV 2 UP
MOV LEFT ACC
MOV ACC DOWN
MOV ACC LEFT
JMP S
W:MOV 1 UP
MOV LEFT NIL
MOV UP LEFT

@7
MOV 0 LEFT
MOV 0 LEFT
MOV 0 LEFT
MOV 0 LEFT
L:MOV UP DOWN
JMP L
