However, this leads to {HEAD ~ the problem} of higher system installation time and costs and {TAIL ~ larger space requirements} of overall system 
of
However , this leads to { HEAD ~ the problem } of higher system installation time and costs and { TAIL ~ larger space requirements } of overall system
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH