English verb conjugation MUST STAIN

Regular verb: stain - stained - stained

Affirmation

Simple form

I must stain
you must stain
she must stain
we must stain
you must stain
they must stain

V-ing form

I must be staining
you must be staining
she must be staining
we must be staining
you must be staining
they must be staining

Perfect

I must have stained
you must have stained
she must have stained
we must have stained
you must have stained
they must have stained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I stain?
must you stain?
must she stain?
must we stain?
must you stain?
must they stain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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