{HEAD ~ The self aligning zipper} 23, wherein {TAIL ~ said first lower body} further comprises a first alignment feature 
{ HEAD ~ The self aligning zipper } 23 , wherein { TAIL ~ said first lower body } further comprises a first alignment feature
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH