I could carburize you could carburize she could carburize we could carburize you could carburize they could carburize
Forme en V-ing
I could be carburizing you could be carburizing she could be carburizing we could be carburizing you could be carburizing they could be carburizing
Perfect
I could have carburized you could have carburized she could have carburized we could have carburized you could have carburized they could have carburized
Perfect en V-ing
I could have been carburizing you could have been carburizing she could have been carburizing we could have been carburizing you could have been carburizing they could have been carburizing
Négation
Forme simple
I could not carburize you could not carburize she could not carburize we could not carburize you could not carburize they could not carburize
Forme en V-ing
I could not be carburizing you could not be carburizing she could not be carburizing we could not be carburizing you could not be carburizing they could not be carburizing
Perfect
I could not have carburized you could not have carburized she could not have carburized we could not have carburized you could not have carburized they could not have carburized
Perfect en V-ing
I could not have been carburizing you could not have been carburizing she could not have been carburizing we could not have been carburizing you could not have been carburizing they could not have been carburizing
Forme interrogative
Forme simple
could I carburize? could you carburize? could she carburize? could we carburize? could you carburize? could they carburize?
Forme en V-ing
could I be carburizing? could you be carburizing? could she be carburizing? could we be carburizing? could you be carburizing? could they be carburizing?
Perfect
could I have carburized? could you have carburized? could she have carburized? could we have carburized? could you have carburized? could they have carburized?
Perfect en V-ing
could I have been carburizing? could you have been carburizing? could she have been carburizing? could we have been carburizing? could you have been carburizing? could they have been carburizing?
Forme interro-négative
Forme simple
could I not carburize? could you not carburize? could she not carburize? could we not carburize? could you not carburize? could they not carburize?
Forme en V-ing
could I not be carburizing? could you not be carburizing? could she not be carburizing? could we not be carburizing? could you not be carburizing? could they not be carburizing?
Perfect
could I not have carburized? could you not have carburized? could she not have carburized? could we not have carburized? could you not have carburized? could they not have carburized?
Perfect en V-ing
could I not have been carburizing? could you not have been carburizing? could she not have been carburizing? could we not have been carburizing? could you not have been carburizing? could they not have been carburizing?