could carburize
Verbe régulier : carburize - carburized- carburized

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could carburize
you could carburize
he could carburize
we could carburize
you could carburize
they could carburize 	I could be carburizing
you could be carburizing
he could be carburizing
we could be carburizing
you could be carburizing
they could be carburizing	I could have carburized
you could have carburized
he could have carburized
we could have carburized
you could have carburized
they could have carburized	I could have been carburizing
you could have been carburizing
he could have been carburizing
we could have been carburizing
you could have been carburizing
they could have been carburizing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't carburize
you couldn't carburize
he couldn't carburize
we couldn't carburize
you couldn't carburize
they couldn't carburize 	I couldn't be carburizing
you couldn't be carburizing
he couldn't be carburizing
we couldn't be carburizing
you couldn't be carburizing
they couldn't be carburizing	I couldn't have carburized
you couldn't have carburized
he couldn't have carburized
we couldn't have carburized
you couldn't have carburized
they couldn't have carburized	I couldn't have been carburizing
you couldn't have been carburizing
he couldn't have been carburizing
we couldn't have been carburizing
you couldn't have been carburizing
they couldn't have been carburizing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I carburize?
could you carburize?
could he carburize?
could we carburize?
could you carburize?
could they carburize? 	could I be carburizing?
could you be carburizing?
could he be carburizing?
could we be carburizing?
could you be carburizing?
could they be carburizing? 	could I have carburized?
could you have carburized?
could he have carburized?
could we have carburized?
could you have carburized?
could they have carburized? 	could I have been carburizing?
could you have been carburizing?
could he have been carburizing?
could we have been carburizing?
could you have been carburizing?
could they have been carburizing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I carburize?
couldn't you carburize?
couldn't he carburize?
couldn't we carburize?
couldn't you carburize?
couldn't they carburize? 	couldn't I be carburizing?
couldn't you be carburizing?
couldn't he be carburizing?
couldn't we be carburizing?
couldn't you be carburizing?
couldn't they be carburizing? 	couldn't I have carburized?
couldn't you have carburized?
couldn't he have carburized?
couldn't we have carburized?
couldn't you have carburized?
couldn't they have carburized? 	couldn't I have been carburizing?
couldn't you have been carburizing?
couldn't he have been carburizing?
couldn't we have been carburizing?
couldn't you have been carburizing?
couldn't they have been carburizing?