English verb conjugation COULD CATALYZE

Regular verb: catalyze - catalyzed - catalyzed

Affirmation

Simple form

I could catalyze
you could catalyze
he could catalyze
we could catalyze
you could catalyze
they could catalyze

V-ing form

I could be catalyzing
you could be catalyzing
he could be catalyzing
we could be catalyzing
you could be catalyzing
they could be catalyzing

Perfect

I could have catalyzed
you could have catalyzed
he could have catalyzed
we could have catalyzed
you could have catalyzed
they could have catalyzed

V-ing perfect

I could have been catalyzing
you could have been catalyzing
he could have been catalyzing
we could have been catalyzing
you could have been catalyzing
they could have been catalyzing

Negation

Simple form

I could not catalyze
you could not catalyze
he could not catalyze
we could not catalyze
you could not catalyze
they could not catalyze

V-ing form

I could not be catalyzing
you could not be catalyzing
he could not be catalyzing
we could not be catalyzing
you could not be catalyzing
they could not be catalyzing

Perfect

I could not have catalyzed
you could not have catalyzed
he could not have catalyzed
we could not have catalyzed
you could not have catalyzed
they could not have catalyzed

V-ing perfect

I could not have been catalyzing
you could not have been catalyzing
he could not have been catalyzing
we could not have been catalyzing
you could not have been catalyzing
they could not have been catalyzing

Interrogative form

Simple form

could I catalyze?
could you catalyze?
could he catalyze?
could we catalyze?
could you catalyze?
could they catalyze?

V-ing form

could I be catalyzing?
could you be catalyzing?
could he be catalyzing?
could we be catalyzing?
could you be catalyzing?
could they be catalyzing?

Perfect

could I have catalyzed?
could you have catalyzed?
could he have catalyzed?
could we have catalyzed?
could you have catalyzed?
could they have catalyzed?

V-ing perfect

could I have been catalyzing?
could you have been catalyzing?
could he have been catalyzing?
could we have been catalyzing?
could you have been catalyzing?
could they have been catalyzing?

Interro-negative form

Simple form

could I not catalyze?
could you not catalyze?
could he not catalyze?
could we not catalyze?
could you not catalyze?
could they not catalyze?

V-ing form

could I not be catalyzing?
could you not be catalyzing?
could he not be catalyzing?
could we not be catalyzing?
could you not be catalyzing?
could they not be catalyzing?

Perfect

could I not have catalyzed?
could you not have catalyzed?
could he not have catalyzed?
could we not have catalyzed?
could you not have catalyzed?
could they not have catalyzed?

V-ing perfect

could I not have been catalyzing?
could you not have been catalyzing?
could he not have been catalyzing?
could we not have been catalyzing?
could you not have been catalyzing?
could they not have been catalyzing?

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