The holes are laterally spaced apart {HEAD ~ a dimension} equal to {TAIL ~ the predetermined dimension} of the parallel end portions so that the end portions may be inserted therein in a removably retained manner 
The holes are laterally spaced apart { HEAD ~ a dimension } equal to { TAIL ~ the predetermined dimension } of the parallel end portions so that the end portions may be inserted therein in a removably retained manner
OTH OTH OTH OTH OTH OTH 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 OTH OTH