English verb conjugation MUST RETARD

Regular verb: retard - retarded - retarded

Affirmation

Simple form

I must retard
you must retard
he must retard
we must retard
you must retard
they must retard

V-ing form

I must be retarding
you must be retarding
he must be retarding
we must be retarding
you must be retarding
they must be retarding

Perfect

I must have retarded
you must have retarded
he must have retarded
we must have retarded
you must have retarded
they must have retarded

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I retard?
must you retard?
must he retard?
must we retard?
must you retard?
must they retard?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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