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