for each value, combining its respective entries from each of {HEAD ~ the built indices} to generate {TAIL ~ a composite entry}, the composite entry indicative of whether all the search substrings occur within the value 
to generate
for each value , combining its respective entries from each of { HEAD ~ the built indices } to generate { TAIL ~ a composite entry } , the composite entry indicative of whether all the search substrings occur within the value
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH