English verb conjugation MUST RIFFLE

Regular verb: riffle - riffled - riffled

Affirmation

Simple form

I must riffle
you must riffle
he must riffle
we must riffle
you must riffle
they must riffle

V-ing form

I must be riffling
you must be riffling
he must be riffling
we must be riffling
you must be riffling
they must be riffling

Perfect

I must have riffled
you must have riffled
he must have riffled
we must have riffled
you must have riffled
they must have riffled

V-ing perfect

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

Negation

Simple form

I mustn't riffle
you mustn't riffle
he mustn't riffle
we mustn't riffle
you mustn't riffle
they mustn't riffle

V-ing form

I mustn't be riffling
you mustn't be riffling
he mustn't be riffling
we mustn't be riffling
you mustn't be riffling
they mustn't be riffling

Perfect

I mustn't have riffled
you mustn't have riffled
he mustn't have riffled
we mustn't have riffled
you mustn't have riffled
they mustn't have riffled

V-ing perfect

I mustn't have been riffling
you mustn't have been riffling
he mustn't have been riffling
we mustn't have been riffling
you mustn't have been riffling
they mustn't have been riffling

Interrogative form

Simple form

must I riffle?
must you riffle?
must he riffle?
must we riffle?
must you riffle?
must they riffle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I riffle?
mustn't you riffle?
mustn't he riffle?
mustn't we riffle?
mustn't you riffle?
mustn't they riffle?

V-ing form

mustn't I be riffling?
mustn't you be riffling?
mustn't he be riffling?
mustn't we be riffling?
mustn't you be riffling?
mustn't they be riffling?

Perfect

mustn't I have riffled?
mustn't you have riffled?
mustn't he have riffled?
mustn't we have riffled?
mustn't you have riffled?
mustn't they have riffled?

V-ing perfect

mustn't I have been riffling?
mustn't you have been riffling?
mustn't he have been riffling?
mustn't we have been riffling?
mustn't you have been riffling?
mustn't they have been riffling?

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