{HEAD ~ Joints} between the fourchette and the anterior and posterior portions maintain {TAIL ~ an opening} formed by the cuff in an open position 
{ HEAD ~ Joints } between the fourchette and the anterior and posterior portions maintain { TAIL ~ an opening } formed by the cuff in an open position
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH