@0
1: MOV UP DOWN
MOV UP ACC
MOV ACC LEFT
SWP
SUB LEFT
MOV ACC DOWN
C: ADD 1
MOV DOWN LEFT
JLZ C
JEZ B
A: MOV LEFT DOWN
SUB 1
JGZ A
B: JRO DOWN
0: MOV UP DOWN

@1


@2


@3


@4
MOV 4 DOWN
MOV LAST DOWN
C: MOV UP ACC
SWP
MOV UP ACC
MOV ACC DOWN
A: ADD 1
MOV ANY ANY
JLZ A
NEG
JLZ A
B: SWP
JEZ 0
MOV -999 UP
0: MOV 1 ANY

@5


@6


@7
MOV 8 ACC
A: SUB 1
MOV LAST LEFT
B: JGZ A
MOV LEFT ACC
JRO UP
1: MOV ACC DOWN
MOV UP NIL
MOV ACC UP
0: MOV UP LEFT
D: MOV UP ACC
C: MOV LEFT ANY
ADD 1
JLZ C
JMP B

@8