English verb conjugation MUST SHEAF

Regular verb: sheaf - sheafed - sheafed

Affirmation

Simple form

I must sheaf
you must sheaf
he must sheaf
we must sheaf
you must sheaf
they must sheaf

V-ing form

I must be sheafing
you must be sheafing
he must be sheafing
we must be sheafing
you must be sheafing
they must be sheafing

Perfect

I must have sheafed
you must have sheafed
he must have sheafed
we must have sheafed
you must have sheafed
they must have sheafed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sheaf?
must you sheaf?
must he sheaf?
must we sheaf?
must you sheaf?
must they sheaf?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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