{HEAD ~ a connecting neck portion} integral with {TAIL ~ one end} of each slotted portion to connect the two slotted portions together 
integral with
{ HEAD ~ a connecting neck portion } integral with { TAIL ~ one end } of each slotted portion to connect the two slotted portions together
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH