{HEAD ~ A thumb portion} secures to {TAIL ~ the anterior portion} and to the fourchette, with the fourchette extending between the thumb portion and the posterior side 
secures to
{ HEAD ~ A thumb portion } secures to { TAIL ~ the anterior portion } and to the fourchette , with the fourchette extending between the thumb portion and the posterior side
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH