{HEAD ~ The resulting, pleated secondary blade} cannot move beyond {TAIL ~ an acute angle} with respect to the main blade because the travel of the shorter LES is limited 
move beyond
{ HEAD ~ The resulting , pleated secondary blade } can not move beyond { TAIL ~ an acute angle } with respect to the main blade because the travel of the shorter LES is limited
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH