Irregular congugation for the verbs "preisen", "weisen" and their compounds: loss of -s- in the second person singular form of Present Indicative ("du beweist"). There is a vowel change in the stem of Present tense ("ich beweise"), the stem of Preterite ("ich bewies") and the stem of Part Participle ("bewiesen").
20 verbs follow this model. Below an extract:
To see other models, refer to Model Table
Based on the ending, you can identify features that different verbs have in common. Click on the verbs above to see their conjugation tables and explore their conjugation patterns.