English verb conjugation MUST RETROGRESS

Regular verb: retrogress - retrogressed - retrogressed

Affirmation

Simple form

I must retrogress
you must retrogress
he must retrogress
we must retrogress
you must retrogress
they must retrogress

V-ing form

I must be retrogressing
you must be retrogressing
he must be retrogressing
we must be retrogressing
you must be retrogressing
they must be retrogressing

Perfect

I must have retrogressed
you must have retrogressed
he must have retrogressed
we must have retrogressed
you must have retrogressed
they must have retrogressed

V-ing perfect

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

Negation

Simple form

I must not retrogress
you must not retrogress
he must not retrogress
we must not retrogress
you must not retrogress
they must not retrogress

V-ing form

I must not be retrogressing
you must not be retrogressing
he must not be retrogressing
we must not be retrogressing
you must not be retrogressing
they must not be retrogressing

Perfect

I must not have retrogressed
you must not have retrogressed
he must not have retrogressed
we must not have retrogressed
you must not have retrogressed
they must not have retrogressed

V-ing perfect

I must not have been retrogressing
you must not have been retrogressing
he must not have been retrogressing
we must not have been retrogressing
you must not have been retrogressing
they must not have been retrogressing

Interrogative form

Simple form

must I retrogress?
must you retrogress?
must he retrogress?
must we retrogress?
must you retrogress?
must they retrogress?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not retrogress?
must you not retrogress?
must he not retrogress?
must we not retrogress?
must you not retrogress?
must they not retrogress?

V-ing form

must I not be retrogressing?
must you not be retrogressing?
must he not be retrogressing?
must we not be retrogressing?
must you not be retrogressing?
must they not be retrogressing?

Perfect

must I not have retrogressed?
must you not have retrogressed?
must he not have retrogressed?
must we not have retrogressed?
must you not have retrogressed?
must they not have retrogressed?

V-ing perfect

must I not have been retrogressing?
must you not have been retrogressing?
must he not have been retrogressing?
must we not have been retrogressing?
must you not have been retrogressing?
must they not have been retrogressing?

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