As previously stated, {TAIL ~ the timing disc} 51 provides very accurate information defining {HEAD ~ the position} of the web 
As previously stated , { TAIL ~ the timing disc } 51 provides very accurate information defining { HEAD ~ the position } of the web
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH