could catalyze
Verbe régulier : catalyze - catalyzed- catalyzed
Traduction française : (US) catalyser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could catalyze
you could catalyze
he could catalyze
we could catalyze
you could catalyze
they could catalyze 	I could be catalyzing
you could be catalyzing
he could be catalyzing
we could be catalyzing
you could be catalyzing
they could be catalyzing	I could have catalyzed
you could have catalyzed
he could have catalyzed
we could have catalyzed
you could have catalyzed
they could have catalyzed	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't catalyze
you couldn't catalyze
he couldn't catalyze
we couldn't catalyze
you couldn't catalyze
they couldn't catalyze 	I couldn't be catalyzing
you couldn't be catalyzing
he couldn't be catalyzing
we couldn't be catalyzing
you couldn't be catalyzing
they couldn't be catalyzing	I couldn't have catalyzed
you couldn't have catalyzed
he couldn't have catalyzed
we couldn't have catalyzed
you couldn't have catalyzed
they couldn't have catalyzed	I couldn't have been catalyzing
you couldn't have been catalyzing
he couldn't have been catalyzing
we couldn't have been catalyzing
you couldn't have been catalyzing
they couldn't have been catalyzing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I catalyze?
could you catalyze?
could he catalyze?
could we catalyze?
could you catalyze?
could they catalyze? 	could I be catalyzing?
could you be catalyzing?
could he be catalyzing?
could we be catalyzing?
could you be catalyzing?
could they be catalyzing? 	could I have catalyzed?
could you have catalyzed?
could he have catalyzed?
could we have catalyzed?
could you have catalyzed?
could they have catalyzed? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I catalyze?
couldn't you catalyze?
couldn't he catalyze?
couldn't we catalyze?
couldn't you catalyze?
couldn't they catalyze? 	couldn't I be catalyzing?
couldn't you be catalyzing?
couldn't he be catalyzing?
couldn't we be catalyzing?
couldn't you be catalyzing?
couldn't they be catalyzing? 	couldn't I have catalyzed?
couldn't you have catalyzed?
couldn't he have catalyzed?
couldn't we have catalyzed?
couldn't you have catalyzed?
couldn't they have catalyzed? 	couldn't I have been catalyzing?
couldn't you have been catalyzing?
couldn't he have been catalyzing?
couldn't we have been catalyzing?
couldn't you have been catalyzing?
couldn't they have been catalyzing?