said holding unit comprises {HEAD ~ a groove} formed at an end portion of said cover insulator and adapted to receive {TAIL ~ the end portion} of said cable inserted therein 
adapted to receive
said holding unit comprises { HEAD ~ a groove } formed at an end portion of said cover insulator and adapted to receive { TAIL ~ the end portion } of said cable inserted therein
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH