All OE vowels, including diphthongs. Can be either short or long.

The original Germanic gradation system, which was rather clearly preserved in the 4th century gothic text, has been to a great extent obscured even in the earliest OE texts, owing to a number of phonetic changes. Let’s see the alternation i/a/ zero: reisan- rais- risum-risans

Kechirasiz, bu mumkin emas.