English verb conjugation MUST DECAY

Regular verb: decay - decayed - decayed

Affirmation

Simple form

I must decay
you must decay
he must decay
we must decay
you must decay
they must decay

V-ing form

I must be decaying
you must be decaying
he must be decaying
we must be decaying
you must be decaying
they must be decaying

Perfect

I must have decayed
you must have decayed
he must have decayed
we must have decayed
you must have decayed
they must have decayed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I decay?
must you decay?
must he decay?
must we decay?
must you decay?
must they decay?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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