{HEAD ~ An intermediate shaft} interposed between {TAIL ~ the additional and main change mechanisms} is also supported by the support frame 
{ HEAD ~ An intermediate shaft } interposed between { TAIL ~ the additional and main change mechanisms } is also supported by the support frame
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH