In a preferred embodiment, the first roll includes {HEAD ~ a plurality} of {TAIL ~ first and second elements} arranged in a pattern 
In a preferred embodiment , the first roll includes { HEAD ~ a plurality } of { TAIL ~ first and second elements } arranged in a pattern
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH