Conjugation and declension of "concertina" in English
Conjugation of the verb concertina[ˌkɔnsəˈti:nə],
regular 
Indicative
Present Indefinite
Present Continuous
Present Perfect
Present Perfect Continuous
Past Indefinite
Past Continuous
Past Perfect
Past Perfect Continuous
Future Indefinite
Future Continuous
Future Perfect
Future Perfect Continuous
Indicative
Present Indefinite
I don't concertinayou don't concertina
he/she/it doesn't concertina
we don't concertina
you don't concertina
they don't concertina
Present Continuous
I am not concertinaingyou aren't concertinaing
he/she/it isn't concertinaing
we aren't concertinaing
you aren't concertinaing
they aren't concertinaing
Present Perfect
I haven't concertinaedyou haven't concertinaed
he/she/it hasn't concertinaed
we haven't concertinaed
you haven't concertinaed
they haven't concertinaed
Present Perfect Continuous
I haven't been concertinaingyou haven't been concertinaing
he/she/it hasn't been concertinaing
we haven't been concertinaing
you haven't been concertinaing
they haven't been concertinaing
Past Indefinite
I didn't concertinayou didn't concertina
he/she/it didn't concertina
we didn't concertina
you didn't concertina
they didn't concertina
Past Continuous
I wasn't concertinaingyou weren't concertinaing
he/she/it wasn't concertinaing
we weren't concertinaing
you weren't concertinaing
they weren't concertinaing
Past Perfect
I hadn't concertinaedyou hadn't concertinaed
he/she/it hadn't concertinaed
we hadn't concertinaed
you hadn't concertinaed
they hadn't concertinaed
Past Perfect Continuous
I hadn't been concertinaingyou hadn't been concertinaing
he/she/it hadn't been concertinaing
we hadn't been concertinaing
you hadn't been concertinaing
they hadn't been concertinaing
Future Indefinite
I shan't / won't concertinayou won't concertina
he/she/it won't concertina
we shan't / won't concertina
you won't concertina
they won't concertina
Future Continuous
I shan't / won't be concertinaingyou won't be concertinaing
he/she/it won't be concertinaing
we shan't / won't be concertinaing
you won't be concertinaing
they won't be concertinaing
Future Perfect
I shan't / won't have concertinaedyou won't have concertinaed
he/she/it won't have concertinaed
we shan't / won't have concertinaed
you won't have concertinaed
they won't have concertinaed
Future Perfect Continuous
I shan't / won't have been concertinaingyou won't have been concertinaing
he/she/it won't have been concertinaing
we shan't / won't have been concertinaing
you won't have been concertinaing
they won't have been concertinaing
Conditional
Conditional Present
Conditional Present Continuous
Conditional Perfect
Conditional Perfect Continuous
Conditional
Conditional Present
I wouldn't concertinayou wouldn't concertina
he/she/it wouldn't concertina
we wouldn't concertina
you wouldn't concertina
they wouldn't concertina
Conditional Present Continuous
I wouldn't be concertinaingyou wouldn't be concertinaing
he/she/it wouldn't be concertinaing
we wouldn't be concertinaing
you wouldn't be concertinaing
they wouldn't be concertinaing
Conditional Perfect
I wouldn't have concertinaedyou wouldn't have concertinaed
he/she/it wouldn't have concertinaed
we wouldn't have concertinaed
you wouldn't have concertinaed
they wouldn't have concertinaed
Conditional Perfect Continuous
I wouldn't have been concertinaingyou wouldn't have been concertinaing
he/she/it wouldn't have been concertinaing
we wouldn't have been concertinaing
you wouldn't have been concertinaing
they wouldn't have been concertinaing
Participles
Present
Past
Infinitives
Infinitives
Popular English Verbs
Conjugation of English verbs
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