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