The pattern of the large cells identifies orientation while {HEAD ~ the exact shape} of the large cell will be {TAIL ~ an indicator} of skew 
be
The pattern of the large cells identifies orientation while { HEAD ~ the exact shape } of the large cell will be { TAIL ~ an indicator } of skew
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH