English verb conjugation MUST UNDERLAY

Irregular verb: underlay - underlaid - underlaid

Affirmation

Simple form

I must underlay
you must underlay
she must underlay
we must underlay
you must underlay
they must underlay

V-ing form

I must be underlaying
you must be underlaying
she must be underlaying
we must be underlaying
you must be underlaying
they must be underlaying

Perfect

I must have underlaid
you must have underlaid
she must have underlaid
we must have underlaid
you must have underlaid
they must have underlaid

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I underlay?
must you underlay?
must she underlay?
must we underlay?
must you underlay?
must they underlay?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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