English verb conjugation MUST LEAVEN

Regular verb: leaven - leavened - leavened

Affirmation

Simple form

I must leaven
you must leaven
he must leaven
we must leaven
you must leaven
they must leaven

V-ing form

I must be leavening
you must be leavening
he must be leavening
we must be leavening
you must be leavening
they must be leavening

Perfect

I must have leavened
you must have leavened
he must have leavened
we must have leavened
you must have leavened
they must have leavened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I leaven?
must you leaven?
must he leaven?
must we leaven?
must you leaven?
must they leaven?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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