English verb conjugation MUST PREFACE

Regular verb: preface - prefaced - prefaced

Affirmation

Simple form

I must preface
you must preface
he must preface
we must preface
you must preface
they must preface

V-ing form

I must be prefacing
you must be prefacing
he must be prefacing
we must be prefacing
you must be prefacing
they must be prefacing

Perfect

I must have prefaced
you must have prefaced
he must have prefaced
we must have prefaced
you must have prefaced
they must have prefaced

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I preface?
must you preface?
must he preface?
must we preface?
must you preface?
must they preface?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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