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