An apparatus 1 wherein {HEAD ~ the link portion} abutts against {TAIL ~ said first leg portion} between said second and third leg portions 
abutts against
An apparatus 1 wherein { HEAD ~ the link portion } abutts against { TAIL ~ said first leg portion } between said second and third leg portions
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH