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