In addition, there are {HEAD ~ other conductors} which can be used to convey {TAIL ~ signals} between the groups 
In addition , there are { HEAD ~ other conductors } which can be used to convey { TAIL ~ signals } between the groups
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH