I could cross-fertilize you could cross-fertilize he could cross-fertilize we could cross-fertilize you could cross-fertilize they could cross-fertilize
Forme en V-ing
I could be cross-fertilizing you could be cross-fertilizing he could be cross-fertilizing we could be cross-fertilizing you could be cross-fertilizing they could be cross-fertilizing
Perfect
I could have cross-fertilized you could have cross-fertilized he could have cross-fertilized we could have cross-fertilized you could have cross-fertilized they could have cross-fertilized
Perfect en V-ing
I could have been cross-fertilizing you could have been cross-fertilizing he could have been cross-fertilizing we could have been cross-fertilizing you could have been cross-fertilizing they could have been cross-fertilizing
Négation
Forme simple
I couldn't cross-fertilize you couldn't cross-fertilize he couldn't cross-fertilize we couldn't cross-fertilize you couldn't cross-fertilize they couldn't cross-fertilize
Forme en V-ing
I couldn't be cross-fertilizing you couldn't be cross-fertilizing he couldn't be cross-fertilizing we couldn't be cross-fertilizing you couldn't be cross-fertilizing they couldn't be cross-fertilizing
Perfect
I couldn't have cross-fertilized you couldn't have cross-fertilized he couldn't have cross-fertilized we couldn't have cross-fertilized you couldn't have cross-fertilized they couldn't have cross-fertilized
Perfect en V-ing
I couldn't have been cross-fertilizing you couldn't have been cross-fertilizing he couldn't have been cross-fertilizing we couldn't have been cross-fertilizing you couldn't have been cross-fertilizing they couldn't have been cross-fertilizing
Forme interrogative
Forme simple
could I cross-fertilize? could you cross-fertilize? could he cross-fertilize? could we cross-fertilize? could you cross-fertilize? could they cross-fertilize?
Forme en V-ing
could I be cross-fertilizing? could you be cross-fertilizing? could he be cross-fertilizing? could we be cross-fertilizing? could you be cross-fertilizing? could they be cross-fertilizing?
Perfect
could I have cross-fertilized? could you have cross-fertilized? could he have cross-fertilized? could we have cross-fertilized? could you have cross-fertilized? could they have cross-fertilized?
Perfect en V-ing
could I have been cross-fertilizing? could you have been cross-fertilizing? could he have been cross-fertilizing? could we have been cross-fertilizing? could you have been cross-fertilizing? could they have been cross-fertilizing?
Forme interro-négative
Forme simple
couldn't I cross-fertilize? couldn't you cross-fertilize? couldn't he cross-fertilize? couldn't we cross-fertilize? couldn't you cross-fertilize? couldn't they cross-fertilize?
Forme en V-ing
couldn't I be cross-fertilizing? couldn't you be cross-fertilizing? couldn't he be cross-fertilizing? couldn't we be cross-fertilizing? couldn't you be cross-fertilizing? couldn't they be cross-fertilizing?
Perfect
couldn't I have cross-fertilized? couldn't you have cross-fertilized? couldn't he have cross-fertilized? couldn't we have cross-fertilized? couldn't you have cross-fertilized? couldn't they have cross-fertilized?
Perfect en V-ing
couldn't I have been cross-fertilizing? couldn't you have been cross-fertilizing? couldn't he have been cross-fertilizing? couldn't we have been cross-fertilizing? couldn't you have been cross-fertilizing? couldn't they have been cross-fertilizing?