Bøying av det engelske verbet to concertina i alle sine former.
| Verbtid | Verbbøying (Uregelrett) |
|---|---|
| Infinitive: | to concertina |
| 3rd person singular: | concertinas |
| Past simple: | concertinaed |
| Past participle: | concertinaed |
| Present participle: | concertinaing |
| Imperative: | concertina! |