{TAIL ~ The rollers} can be moved apart to allow {HEAD ~ the snake} to be initially mounted in the machine 
{ TAIL ~ The rollers } can be moved apart to allow { HEAD ~ the snake } to be initially mounted in the machine
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH