9. The method according to claim 8 , wherein each tense of each grammatical type in the first set is tokenized with a different token.
9. The method according to claim 8 , wherein each tense of each grammatical type in the first set is tokenized with a different token. 10. The method according to claim 9 , wherein the second set of grammatical types of words includes possessive pronouns, pronouns, articles, and prepositions.