{HEAD ~ The second ends} of the elongated flexible elements are connected respectively to {TAIL ~ the first and second surfaces} at one end of the surface, wherein the fexible elements are operable to be wound or unwound on the respective surfaces as the member rotates about the axis 
are connected respectively to
{ HEAD ~ The second ends } of the elongated flexible elements are connected respectively to { TAIL ~ the first and second surfaces } at one end of the surface , wherein the fexible elements are operable to be wound or unwound on the respective surfaces as the member rotates about the axis
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL 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 OTH OTH OTH OTH OTH OTH OTH