The apparatus has {HEAD ~ the attributes} of being of {TAIL ~ a reduced size} and simplified operation, and is inexpensive to manufacture compared to other purification systems 
of
The apparatus has { HEAD ~ the attributes } of being of { TAIL ~ a reduced size } and simplified operation , and is inexpensive to manufacture compared to other purification systems
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH