The fourchette may be the primary means proximately securing the cuff portion of the anterior portion to {HEAD ~ the cuff portion} of {TAIL ~ the posterior portion} 
of
The fourchette may be the primary means proximately securing the cuff portion of the anterior portion to { HEAD ~ the cuff portion } of { TAIL ~ the posterior portion }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL