{HEAD ~ The spell checker} employs {TAIL ~ a dictionary} wherein each word of the dictionary has a signature associated with the word to facilitate searching for substitute words 
employs
{ HEAD ~ The spell checker } employs { TAIL ~ a dictionary } wherein each word of the dictionary has a signature associated with the word to facilitate searching for substitute words
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH