I could standardize you could standardize he could standardize we could standardize you could standardize they could standardize
Forme en V-ing
I could be standardizing you could be standardizing he could be standardizing we could be standardizing you could be standardizing they could be standardizing
Perfect
I could have standardized you could have standardized he could have standardized we could have standardized you could have standardized they could have standardized
Perfect en V-ing
I could have been standardizing you could have been standardizing he could have been standardizing we could have been standardizing you could have been standardizing they could have been standardizing
Négation
Forme simple
I couldn't standardize you couldn't standardize he couldn't standardize we couldn't standardize you couldn't standardize they couldn't standardize
Forme en V-ing
I couldn't be standardizing you couldn't be standardizing he couldn't be standardizing we couldn't be standardizing you couldn't be standardizing they couldn't be standardizing
Perfect
I couldn't have standardized you couldn't have standardized he couldn't have standardized we couldn't have standardized you couldn't have standardized they couldn't have standardized
Perfect en V-ing
I couldn't have been standardizing you couldn't have been standardizing he couldn't have been standardizing we couldn't have been standardizing you couldn't have been standardizing they couldn't have been standardizing
Forme interrogative
Forme simple
could I standardize? could you standardize? could he standardize? could we standardize? could you standardize? could they standardize?
Forme en V-ing
could I be standardizing? could you be standardizing? could he be standardizing? could we be standardizing? could you be standardizing? could they be standardizing?
Perfect
could I have standardized? could you have standardized? could he have standardized? could we have standardized? could you have standardized? could they have standardized?
Perfect en V-ing
could I have been standardizing? could you have been standardizing? could he have been standardizing? could we have been standardizing? could you have been standardizing? could they have been standardizing?
Forme interro-négative
Forme simple
couldn't I standardize? couldn't you standardize? couldn't he standardize? couldn't we standardize? couldn't you standardize? couldn't they standardize?
Forme en V-ing
couldn't I be standardizing? couldn't you be standardizing? couldn't he be standardizing? couldn't we be standardizing? couldn't you be standardizing? couldn't they be standardizing?
Perfect
couldn't I have standardized? couldn't you have standardized? couldn't he have standardized? couldn't we have standardized? couldn't you have standardized? couldn't they have standardized?
Perfect en V-ing
couldn't I have been standardizing? couldn't you have been standardizing? couldn't he have been standardizing? couldn't we have been standardizing? couldn't you have been standardizing? couldn't they have been standardizing?