English verb conjugation MUST TROUBLE

Regular verb: trouble - troubled - troubled

Affirmation

Simple form

I must trouble
you must trouble
he must trouble
we must trouble
you must trouble
they must trouble

V-ing form

I must be troubling
you must be troubling
he must be troubling
we must be troubling
you must be troubling
they must be troubling

Perfect

I must have troubled
you must have troubled
he must have troubled
we must have troubled
you must have troubled
they must have troubled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I trouble?
must you trouble?
must he trouble?
must we trouble?
must you trouble?
must they trouble?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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