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