In Thamil, there is a special way to describe a series of actions taking place. The final action is written as usual, using whichever verb forms that are appropriate. For each of the actions preceding the final action, the verbs are changed into their AvP (adverbial participle) form.

The AvP of a verb is formed by adding
  • -உ to the past tense stem of the verb (classes 1-2, 4-7)
  • -இ to the verb (class 3)

negative AvP
The negative AvP of a verb is formed by replacing the final -அ from the infinitive with -ஆமல்

For இரு, however, the negative AvP is இல்லாமல்.