Verb: Verbs are divided to Main, Verbal(VN) and Auxilary(VAUX) categories. Main verb can be Finite(VF), Non Finite(VNF), Infinitive(VINF). Total 6 tags. Obviously the tense information is not captured. Verbs in Malayalam get inflected based on tense, mood, voice and aspect. Verbs are inflected for present, past and future tenses. Perfect, habitual and iterative aspects are very common. Iterative aspect has tense and emphatic variations. Verbs get inflected with causative and passive voices as well. A variety of mood forms such as abilitative, imperative, compulsive, promissive, optative, purposive, permissive, precative, irrealis,monitory, conditional, satisfactive exist. All o fthese forms are supported by Mlmorph. It is a serious omission in BIS POS set. If you are not able to extract at least tense information, I don’t know how useful a POS tagging is.