English verb conjugation MUST UNDERGO

Irregular verb: undergo - underwent - undergone

Affirmation

Simple form

I must undergo
you must undergo
she must undergo
we must undergo
you must undergo
they must undergo

V-ing form

I must be undergoing
you must be undergoing
she must be undergoing
we must be undergoing
you must be undergoing
they must be undergoing

Perfect

I must have undergone
you must have undergone
she must have undergone
we must have undergone
you must have undergone
they must have undergone

V-ing perfect

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

Negation

Simple form

I must not undergo
you must not undergo
she must not undergo
we must not undergo
you must not undergo
they must not undergo

V-ing form

I must not be undergoing
you must not be undergoing
she must not be undergoing
we must not be undergoing
you must not be undergoing
they must not be undergoing

Perfect

I must not have undergone
you must not have undergone
she must not have undergone
we must not have undergone
you must not have undergone
they must not have undergone

V-ing perfect

I must not have been undergoing
you must not have been undergoing
she must not have been undergoing
we must not have been undergoing
you must not have been undergoing
they must not have been undergoing

Interrogative form

Simple form

must I undergo?
must you undergo?
must she undergo?
must we undergo?
must you undergo?
must they undergo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not undergo?
must you not undergo?
must she not undergo?
must we not undergo?
must you not undergo?
must they not undergo?

V-ing form

must I not be undergoing?
must you not be undergoing?
must she not be undergoing?
must we not be undergoing?
must you not be undergoing?
must they not be undergoing?

Perfect

must I not have undergone?
must you not have undergone?
must she not have undergone?
must we not have undergone?
must you not have undergone?
must they not have undergone?

V-ing perfect

must I not have been undergoing?
must you not have been undergoing?
must she not have been undergoing?
must we not have been undergoing?
must you not have been undergoing?
must they not have been undergoing?

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