English verb conjugation MUST UMBER

Regular verb: umber - umbered - umbered

Affirmation

Simple form

I must umber
you must umber
he must umber
we must umber
you must umber
they must umber

V-ing form

I must be umbering
you must be umbering
he must be umbering
we must be umbering
you must be umbering
they must be umbering

Perfect

I must have umbered
you must have umbered
he must have umbered
we must have umbered
you must have umbered
they must have umbered

V-ing perfect

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

Negation

Simple form

I must not umber
you must not umber
he must not umber
we must not umber
you must not umber
they must not umber

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I umber?
must you umber?
must he umber?
must we umber?
must you umber?
must they umber?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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