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