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