English verb conjugation MUST ENGRAIN

Regular verb: engrain - engrained - engrained

Affirmation

Simple form

I must engrain
you must engrain
he must engrain
we must engrain
you must engrain
they must engrain

V-ing form

I must be engraining
you must be engraining
he must be engraining
we must be engraining
you must be engraining
they must be engraining

Perfect

I must have engrained
you must have engrained
he must have engrained
we must have engrained
you must have engrained
they must have engrained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I engrain?
must you engrain?
must he engrain?
must we engrain?
must you engrain?
must they engrain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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