When {HEAD ~ the search session} is in {TAIL ~ the Ambiguous state} 501 and the user enters another character into the Search Box 101, a determination is made if the text currently in the Search Box 101, including the just entered character, is a valid full word 
When { HEAD ~ the search session } is in { TAIL ~ the Ambiguous state } 501 and the user enters another character into the Search Box 101 , a determination is made if the text currently in the Search Box 101 , including the just entered character , is a valid full word
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH