The blister sheet is in {TAIL ~ the form} of {HEAD ~ a strip} with the blisters aligned 
The blister sheet is in { TAIL ~ the form } of { HEAD ~ a strip } with the blisters aligned
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH