{TAIL ~ A fourchette} secures portions of the perimeter of {HEAD ~ the anterior and posterior portions} to one another 
{ TAIL ~ A fourchette } secures portions of the perimeter of { HEAD ~ the anterior and posterior portions } to one another
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH