In a preferred embodiment, {HEAD ~ the first roll} includes {TAIL ~ at least a first and second element} extending radially therefrom, with the first element having a greater radial height than the second element, which avoids contact with the third roll 
includes
In a preferred embodiment , { HEAD ~ the first roll } includes { TAIL ~ at least a first and second element } extending radially therefrom , with the first element having a greater radial height than the second element , which avoids contact with the third roll
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH