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 must not thumb
you must not thumb
he must not thumb
we must not thumb
you must not thumb
they must not thumb

V-ing form

I must not be thumbing
you must not be thumbing
he must not be thumbing
we must not be thumbing
you must not be thumbing
they must not be thumbing

Perfect

I must not have thumbed
you must not have thumbed
he must not have thumbed
we must not have thumbed
you must not have thumbed
they must not have thumbed

V-ing perfect

I must not have been thumbing
you must not have been thumbing
he must not have been thumbing
we must not have been thumbing
you must not have been thumbing
they must not 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

must I not thumb?
must you not thumb?
must he not thumb?
must we not thumb?
must you not thumb?
must they not thumb?

V-ing form

must I not be thumbing?
must you not be thumbing?
must he not be thumbing?
must we not be thumbing?
must you not be thumbing?
must they not be thumbing?

Perfect

must I not have thumbed?
must you not have thumbed?
must he not have thumbed?
must we not have thumbed?
must you not have thumbed?
must they not have thumbed?

V-ing perfect

must I not have been thumbing?
must you not have been thumbing?
must he not have been thumbing?
must we not have been thumbing?
must you not have been thumbing?
must they not have been thumbing?

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