The BIN typically occupies {TAIL ~ the first six digits} of the PAN and may be considered a first end portion of {HEAD ~ the PAN} 
The BIN typically occupies { TAIL ~ the first six digits } of the PAN and may be considered a first end portion of { HEAD ~ the PAN }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD