{HEAD ~ The roller frame assembly} includes at least one idler wheel and {TAIL ~ a number} of guide rollers 
includes
{ HEAD ~ The roller frame assembly } includes at least one idler wheel and { TAIL ~ a number } of guide rollers
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH