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