{HEAD ~ The first flexible element} produces {TAIL ~ a force moment} about the axis in a first direction biasing the force modifying member into rotation in the first direction 
produces
{ HEAD ~ The first flexible element } produces { TAIL ~ a force moment } about the axis in a first direction biasing the force modifying member into rotation in the first direction
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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