English verb conjugation MUST THUMB

Regular verb: thumb - thumbed - thumbed

Affirmation

Simple form

I must thumb
you must thumb
he must thumb
we must thumb
you must thumb
they must thumb

V-ing form

I must be thumbing
you must be thumbing
he must be thumbing
we must be thumbing
you must be thumbing
they must be thumbing

Perfect

I must have thumbed
you must have thumbed
he must have thumbed
we must have thumbed
you must have thumbed
they must have thumbed

V-ing perfect

I must have been thumbing
you must have been thumbing
he must have been thumbing
we must have been thumbing
you must have been thumbing
they must have been thumbing

Negation

Simple form

I mustn't thumb
you mustn't thumb
he mustn't thumb
we mustn't thumb
you mustn't thumb
they mustn't thumb

V-ing form

I mustn't be thumbing
you mustn't be thumbing
he mustn't be thumbing
we mustn't be thumbing
you mustn't be thumbing
they mustn't be thumbing

Perfect

I mustn't have thumbed
you mustn't have thumbed
he mustn't have thumbed
we mustn't have thumbed
you mustn't have thumbed
they mustn't have thumbed

V-ing perfect

I mustn't have been thumbing
you mustn't have been thumbing
he mustn't have been thumbing
we mustn't have been thumbing
you mustn't have been thumbing
they mustn't have been thumbing

Interrogative form

Simple form

must I thumb?
must you thumb?
must he thumb?
must we thumb?
must you thumb?
must they thumb?

V-ing form

must I be thumbing?
must you be thumbing?
must he be thumbing?
must we be thumbing?
must you be thumbing?
must they be thumbing?

Perfect

must I have thumbed?
must you have thumbed?
must he have thumbed?
must we have thumbed?
must you have thumbed?
must they have thumbed?

V-ing perfect

must I have been thumbing?
must you have been thumbing?
must he have been thumbing?
must we have been thumbing?
must you have been thumbing?
must they have been thumbing?

Interro-negative form

Simple form

mustn't I thumb?
mustn't you thumb?
mustn't he thumb?
mustn't we thumb?
mustn't you thumb?
mustn't they thumb?

V-ing form

mustn't I be thumbing?
mustn't you be thumbing?
mustn't he be thumbing?
mustn't we be thumbing?
mustn't you be thumbing?
mustn't they be thumbing?

Perfect

mustn't I have thumbed?
mustn't you have thumbed?
mustn't he have thumbed?
mustn't we have thumbed?
mustn't you have thumbed?
mustn't they have thumbed?

V-ing perfect

mustn't I have been thumbing?
mustn't you have been thumbing?
mustn't he have been thumbing?
mustn't we have been thumbing?
mustn't you have been thumbing?
mustn't they have been thumbing?

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