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