@0 @1 SUB UP JEZ E ADD 5 MOV ACC RIGHT NEG E: SUB UP ADD 11 MOV ACC RIGHT SUB ACC @2 JRO LEFT MOV UP,NIL MOV UP,NIL MOV UP,NIL MOV UP,NIL MOV UP DOWN JRO LEFT MOV UP DOWN MOV UP DOWN MOV UP DOWN MOV UP DOWN MOV UP DOWN MOV 0 DOWN B: MOV UP,ACC JNZ B @3 @4 @5 @6 MOV UP DOWN @7 @8 @9 MOV UP,DOWN @10