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