FIG 3 illustrates {TAIL ~ one possible spacing arrangement} in accordance with the principles of a preferred form of {HEAD ~ the present invention} 
FIG 3 illustrates { TAIL ~ one possible spacing arrangement } in accordance with the principles of a preferred form of { HEAD ~ the present invention }
OTH OTH OTH 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