The movement phase of the motor occurs in {TAIL ~ several steps} and begins by turning off {HEAD ~ the current} to coil B  
The movement phase of the motor occurs in { TAIL ~ several steps } and begins by turning off { HEAD ~ the current } to coil B
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH