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 can't catalyze you can't catalyze he can't catalyze we can't catalyze you can't catalyze they can't catalyze	I can't be catalyzing you can't be catalyzing he can't be catalyzing we can't be catalyzing you can't be catalyzing they can't be catalyzing
Perfect	V-ing perfect
I can't have catalyzed you can't have catalyzed he can't have catalyzed we can't have catalyzed you can't have catalyzed they can't have catalyzed	I can't have been catalyzing you can't have been catalyzing he can't have been catalyzing we can't have been catalyzing you can't have been catalyzing they can't 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't I catalyze? can't you catalyze? can't he catalyze? can't we catalyze? can't you catalyze? can't they catalyze?	can't I be catalyzing? can't you be catalyzing? can't he be catalyzing? can't we be catalyzing? can't you be catalyzing? can't they be catalyzing?
Perfect	V-ing perfect
can't I have catalyzed? can't you have catalyzed? can't he have catalyzed? can't we have catalyzed? can't you have catalyzed? can't they have catalyzed?	can't I have been catalyzing? can't you have been catalyzing? can't he have been catalyzing? can't we have been catalyzing? can't you have been catalyzing? can't they have been catalyzing?