Conveniently, each zone may be the width of one board across {HEAD ~ the bowling alley} so that different discrete amounts of {TAIL ~ oil} can be applied to each board 
Conveniently , each zone may be the width of one board across { HEAD ~ the bowling alley } so that different discrete amounts of { TAIL ~ oil } can be applied to each board
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH