| I | concertina |
| you | concertina |
| he/she/it | concertinas |
| we | concertina |
| you | concertina |
| they | concertina |
| I | have concertinaed |
| you | have concertinaed |
| he/she/it | has concertinaed |
| we | have concertinaed |
| you | have concertinaed |
| they | have concertinaed |
| I | concertinaed |
| you | concertinaed |
| he/she/it | concertinaed |
| we | concertinaed |
| you | concertinaed |
| they | concertinaed |
| I | had concertinaed |
| you | had concertinaed |
| he/she/it | had concertinaed |
| we | had concertinaed |
| you | had concertinaed |
| they | had concertinaed |
| I | will concertina |
| you | will concertina |
| he/she/it | will concertina |
| we | will concertina |
| you | will concertina |
| they | will concertina |
| I | will have concertinaed |
| you | will have concertinaed |
| he/she/it | will have concertinaed |
| we | will have concertinaed |
| you | will have concertinaed |
| they | will have concertinaed |
| I | am concertinaing |
| you | are concertinaing |
| he/she/it | is concertinaing |
| we | are concertinaing |
| you | are concertinaing |
| they | are concertinaing |
| I | have been concertinaing |
| you | have been concertinaing |
| he/she/it | has been concertinaing |
| we | have been concertinaing |
| you | have been concertinaing |
| they | have been concertinaing |
| I | was concertinaing |
| you | were concertinaing |
| he/she/it | was concertinaing |
| we | were concertinaing |
| you | were concertinaing |
| they | were concertinaing |
| I | had been concertinaing |
| you | had been concertinaing |
| he/she/it | had been concertinaing |
| we | had been concertinaing |
| you | had been concertinaing |
| they | had been concertinaing |
| I | will be concertinaing |
| you | will be concertinaing |
| he/she/it | will be concertinaing |
| we | will be concertinaing |
| you | will be concertinaing |
| they | will be concertinaing |
| I | will have been concertinaing |
| you | will have been concertinaing |
| he/she/it | will have been concertinaing |
| we | will have been concertinaing |
| you | will have been concertinaing |
| they | will have been concertinaing |
| I | would concertina |
| you | would concertina |
| he/she/it | would concertina |
| we | would concertina |
| you | would concertina |
| they | would concertina |
| I | would have concertinaed |
| you | would have concertinaed |
| he/she/it | would have concertinaed |
| we | would have concertinaed |
| you | would have concertinaed |
| they | would have concertinaed |
| I | would be concertinaing |
| you | would be concertinaing |
| he/she/it | would be concertinaing |
| we | would be concertinaing |
| you | would be concertinaing |
| they | would be concertinaing |
| I | would have been concertinaing |
| you | would have been concertinaing |
| he/she/it | would have been concertinaing |
| we | would have been concertinaing |
| you | would have been concertinaing |
| they | would have been concertinaing |
| You | concertina |
| we | Let's concertina |
| You | concertina |