{HEAD ~ The high bending elasticity} results in {TAIL ~ a long average service life} and, in conjunction with a low stretch related slip and correspondingly small speed loss, in a high degree of efficiency 
{ HEAD ~ The high bending elasticity } results in { TAIL ~ a long average service life } and , in conjunction with a low stretch related slip and correspondingly small speed loss , in a high degree of efficiency
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL 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