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