English verb conjugation MUST ROLF

Regular verb: rolf - rolfed - rolfed

Affirmation

Simple form

I must rolf
you must rolf
he must rolf
we must rolf
you must rolf
they must rolf

V-ing form

I must be rolfing
you must be rolfing
he must be rolfing
we must be rolfing
you must be rolfing
they must be rolfing

Perfect

I must have rolfed
you must have rolfed
he must have rolfed
we must have rolfed
you must have rolfed
they must have rolfed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I rolf?
must you rolf?
must he rolf?
must we rolf?
must you rolf?
must they rolf?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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