In {HEAD ~ addition}, the removable plate 42 can have any size. shape, or {TAIL ~ configuration} desired 
In { HEAD ~ addition } , the removable plate 42 can have any size . shape , or { TAIL ~ configuration } desired
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH