Further, {HEAD ~ a storage region} within {TAIL ~ the trap device} may be used to accumulate deposits 
Further , { HEAD ~ a storage region } within { TAIL ~ the trap device } may be used to accumulate deposits
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH