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