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