The profiling indices result in {HEAD ~ a reduction} of the number of records that are searched when searching for a sub string match within {TAIL ~ that column} 
The profiling indices result in { HEAD ~ a reduction } of the number of records that are searched when searching for a sub string match within { TAIL ~ that column }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL