{TAIL ~ first and second side portions} integral with each slotted portion at one side edge of {HEAD ~ said slotted portions} 
{ TAIL ~ first and second side portions } integral with each slotted portion at one side edge of { HEAD ~ said slotted portions }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD