@1
S: MOV UP, ACC
SAV
L: SUB 16
JLZ D
SWP
ADD 4
SWP
JMP L
D: MOV ACC, RIGHT
SWP
MOV ACC, RIGHT

@2
S: MOV LEFT, ACC
ADD 8
JLZ L8
MOV LEFT, ACC
ADD 2
MOV ACC, DOWN
JMP S
L8: MOV LEFT, DOWN

@6
MOV UP, DOWN

@9
MOV UP, DOWN
