{HEAD ~ The machine} 6 wherein {TAIL ~ the belts}, the wheel and the shoe surfaces define axially spaced pairs of path segments whereby the machine is configured such that the segments form a spaced pair of seals in a web transported by wheel rotation 
wherein
{ HEAD ~ The machine } 6 wherein { TAIL ~ the belts } , the wheel and the shoe surfaces define axially spaced pairs of path segments whereby the machine is configured such that the segments form a spaced pair of seals in a web transported by wheel rotation
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH