The anti rotation element to suppress {HEAD ~ a rotational or swiveling movement} about {TAIL ~ the oscillation axis} 
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The anti rotation element to suppress { HEAD ~ a rotational or swiveling movement } about { TAIL ~ the oscillation axis }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL