Radical -Changing IR Verbs — Defined

Radical -Changing IR Verbs — Defined

In the present tense, certain verbs of the third conjugation also change the root of the stem, when stressed, from e to ie and from o to ue. See Radical -Changing AR and ER Verbs — Defined
for similar changes in verbs of the first and second conjugation. These third conjugations verbs have been separated here because they also undergo a change in the past tense. As has already been studied, vowel changing verbs of the first and second conjugations remain regular in the past tense.