{HEAD ~ An elastic tether} extends between {TAIL ~ the plug cap} and the housing cap for securing the plug cap to the housing cap 
extends between
{ HEAD ~ An elastic tether } extends between { TAIL ~ the plug cap } and the housing cap for securing the plug cap to the housing cap
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH