English verb conjugation MUST RIVE

Irregular verb: rive - rived - rived, riven

Affirmation

Simple form

I must rive
you must rive
she must rive
we must rive
you must rive
they must rive

V-ing form

I must be riving
you must be riving
she must be riving
we must be riving
you must be riving
they must be riving

Perfect

I must have rived, riven
you must have rived, riven
she must have rived, riven
we must have rived, riven
you must have rived, riven
they must have rived, riven

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

I mustn't have rived, riven
you mustn't have rived, riven
she mustn't have rived, riven
we mustn't have rived, riven
you mustn't have rived, riven
they mustn't have rived, riven

V-ing perfect

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

Interrogative form

Simple form

must I rive?
must you rive?
must she rive?
must we rive?
must you rive?
must they rive?

V-ing form

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

Perfect

must I have rived, riven?
must you have rived, riven?
must she have rived, riven?
must we have rived, riven?
must you have rived, riven?
must they have rived, riven?

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

mustn't I have rived, riven?
mustn't you have rived, riven?
mustn't she have rived, riven?
mustn't we have rived, riven?
mustn't you have rived, riven?
mustn't they have rived, riven?

V-ing perfect

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

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