The housing may have holes to accommodate {TAIL ~ a pad} that seats against {HEAD ~ the individual sensing lines} 
The housing may have holes to accommodate { TAIL ~ a pad } that seats against { HEAD ~ the individual sensing lines }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD