The apparatus 71 wherein said processor circuit is configured to define, as said second meaningful grouping, {HEAD ~ a theme} comprising {TAIL ~ said at least two patterns} 
The apparatus 71 wherein said processor circuit is configured to define , as said second meaningful grouping , { HEAD ~ a theme } comprising { TAIL ~ said at least two patterns }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL