Furthermore, the system allows for easy retrofitting into existing systems as well as {HEAD ~ integration} into {TAIL ~ new systems} 
into
Furthermore , the system allows for easy retrofitting into existing systems as well as { HEAD ~ integration } into { TAIL ~ new systems }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL