Such combined use of substrate and oxygen supplier simplifies {HEAD ~ the manufacture} of the implement and reduces {TAIL ~ the cost} 
Such combined use of substrate and oxygen supplier simplifies { HEAD ~ the manufacture } of the implement and reduces { TAIL ~ the cost }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL