{HEAD ~ Alignment hole} 17 is also in {TAIL ~ the shape} of a comer cut out 
is in
{ HEAD ~ Alignment hole } 17 is also in { TAIL ~ the shape } of a comer cut out
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH