English verb conjugation MUST BACKSTOP

Regular verb: backstop - backstoped - backstoped

Affirmation

Simple form

I must backstop
you must backstop
he must backstop
we must backstop
you must backstop
they must backstop

V-ing form

I must be backstoping
you must be backstoping
he must be backstoping
we must be backstoping
you must be backstoping
they must be backstoping

Perfect

I must have backstoped
you must have backstoped
he must have backstoped
we must have backstoped
you must have backstoped
they must have backstoped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I backstop?
must you backstop?
must he backstop?
must we backstop?
must you backstop?
must they backstop?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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