@1
MOV UP, RIGHT
MOV UP, ACC
SUB RIGHT
ADD 1
MOV ACC, RIGHT

@2
S: MOV LEFT, ACC
MOV ACC, LEFT
JEZ D
K: MOV UP, NIL
SUB 1
JNZ K
D: MOV LEFT, ACC
T: MOV UP, DOWN
SUB 1
JNZ T
R: MOV UP, ACC
JNZ R
MOV ACC, DOWN

@6
MOV UP, DOWN

@9
MOV UP, DOWN
