English verb conjugation MUST CONCERTINA

Regular verb: concertina - concertinaed - concertinaed

Affirmation

Simple form

I must concertina
you must concertina
she must concertina
we must concertina
you must concertina
they must concertina

V-ing form

I must be concertinaing
you must be concertinaing
she must be concertinaing
we must be concertinaing
you must be concertinaing
they must be concertinaing

Perfect

I must have concertinaed
you must have concertinaed
she must have concertinaed
we must have concertinaed
you must have concertinaed
they must have concertinaed

V-ing perfect

I must have been concertinaing
you must have been concertinaing
she must have been concertinaing
we must have been concertinaing
you must have been concertinaing
they must have been concertinaing

Negation

Simple form

I mustn't concertina
you mustn't concertina
she mustn't concertina
we mustn't concertina
you mustn't concertina
they mustn't concertina

V-ing form

I mustn't be concertinaing
you mustn't be concertinaing
she mustn't be concertinaing
we mustn't be concertinaing
you mustn't be concertinaing
they mustn't be concertinaing

Perfect

I mustn't have concertinaed
you mustn't have concertinaed
she mustn't have concertinaed
we mustn't have concertinaed
you mustn't have concertinaed
they mustn't have concertinaed

V-ing perfect

I mustn't have been concertinaing
you mustn't have been concertinaing
she mustn't have been concertinaing
we mustn't have been concertinaing
you mustn't have been concertinaing
they mustn't have been concertinaing

Interrogative form

Simple form

must I concertina?
must you concertina?
must she concertina?
must we concertina?
must you concertina?
must they concertina?

V-ing form

must I be concertinaing?
must you be concertinaing?
must she be concertinaing?
must we be concertinaing?
must you be concertinaing?
must they be concertinaing?

Perfect

must I have concertinaed?
must you have concertinaed?
must she have concertinaed?
must we have concertinaed?
must you have concertinaed?
must they have concertinaed?

V-ing perfect

must I have been concertinaing?
must you have been concertinaing?
must she have been concertinaing?
must we have been concertinaing?
must you have been concertinaing?
must they have been concertinaing?

Interro-negative form

Simple form

mustn't I concertina?
mustn't you concertina?
mustn't she concertina?
mustn't we concertina?
mustn't you concertina?
mustn't they concertina?

V-ing form

mustn't I be concertinaing?
mustn't you be concertinaing?
mustn't she be concertinaing?
mustn't we be concertinaing?
mustn't you be concertinaing?
mustn't they be concertinaing?

Perfect

mustn't I have concertinaed?
mustn't you have concertinaed?
mustn't she have concertinaed?
mustn't we have concertinaed?
mustn't you have concertinaed?
mustn't they have concertinaed?

V-ing perfect

mustn't I have been concertinaing?
mustn't you have been concertinaing?
mustn't she have been concertinaing?
mustn't we have been concertinaing?
mustn't you have been concertinaing?
mustn't they have been concertinaing?

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