Further, channels are formed by removing {TAIL ~ portions} of {HEAD ~ the substrate} other than the bodies on the substrate 
Further , channels are formed by removing { TAIL ~ portions } of { HEAD ~ the substrate } other than the bodies on the substrate
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH