English verb conjugation MUST CATALYSE

Regular verb: catalyse - catalysed - catalysed

Affirmation

Simple form

I must catalyse
you must catalyse
he must catalyse
we must catalyse
you must catalyse
they must catalyse

V-ing form

I must be catalysing
you must be catalysing
he must be catalysing
we must be catalysing
you must be catalysing
they must be catalysing

Perfect

I must have catalysed
you must have catalysed
he must have catalysed
we must have catalysed
you must have catalysed
they must have catalysed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I catalyse?
must you catalyse?
must he catalyse?
must we catalyse?
must you catalyse?
must they catalyse?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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