English verb conjugation
CAN CATALYZE

Regular verb: catalyze - catalyzed - catalyzed

Affirmation

Simple form	V-ing form
I can catalyze you can catalyze he can catalyze we can catalyze you can catalyze they can catalyze	I can be catalyzing you can be catalyzing he can be catalyzing we can be catalyzing you can be catalyzing they can be catalyzing
Perfect	V-ing perfect
I can have catalyzed you can have catalyzed he can have catalyzed we can have catalyzed you can have catalyzed they can have catalyzed	I can have been catalyzing you can have been catalyzing he can have been catalyzing we can have been catalyzing you can have been catalyzing they can have been catalyzing

Negation

Simple form	V-ing form
I cannot catalyze you cannot catalyze he cannot catalyze we cannot catalyze you cannot catalyze they cannot catalyze	I cannot be catalyzing you cannot be catalyzing he cannot be catalyzing we cannot be catalyzing you cannot be catalyzing they cannot be catalyzing
Perfect	V-ing perfect
I cannot have catalyzed you cannot have catalyzed he cannot have catalyzed we cannot have catalyzed you cannot have catalyzed they cannot have catalyzed	I cannot have been catalyzing you cannot have been catalyzing he cannot have been catalyzing we cannot have been catalyzing you cannot have been catalyzing they cannot have been catalyzing

Interrogative form

Simple form	V-ing form
can I catalyze? can you catalyze? can he catalyze? can we catalyze? can you catalyze? can they catalyze?	can I be catalyzing? can you be catalyzing? can he be catalyzing? can we be catalyzing? can you be catalyzing? can they be catalyzing?
Perfect	V-ing perfect
can I have catalyzed? can you have catalyzed? can he have catalyzed? can we have catalyzed? can you have catalyzed? can they have catalyzed?	can I have been catalyzing? can you have been catalyzing? can he have been catalyzing? can we have been catalyzing? can you have been catalyzing? can they have been catalyzing?

Interro-negative form

Simple form	V-ing form
can I not catalyze? can you not catalyze? can he not catalyze? can we not catalyze? can you not catalyze? can they not catalyze?	can I not be catalyzing? can you not be catalyzing? can he not be catalyzing? can we not be catalyzing? can you not be catalyzing? can they not be catalyzing?
Perfect	V-ing perfect
can I not have catalyzed? can you not have catalyzed? can he not have catalyzed? can we not have catalyzed? can you not have catalyzed? can they not have catalyzed?	can I not have been catalyzing? can you not have been catalyzing? can he not have been catalyzing? can we not have been catalyzing? can you not have been catalyzing? can they not have been catalyzing?