Both fiber 30 and {HEAD ~ its protective cabling} are housed in {TAIL ~ a sheath} 34 
housed in
Both fiber 30 and { HEAD ~ its protective cabling } are housed in { TAIL ~ a sheath } 34
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH