I could abstract you could abstract she could abstract we could abstract you could abstract they could abstract
Forme en V-ing
I could be abstracting you could be abstracting she could be abstracting we could be abstracting you could be abstracting they could be abstracting
Perfect
I could have abstracted you could have abstracted she could have abstracted we could have abstracted you could have abstracted they could have abstracted
Perfect en V-ing
I could have been abstracting you could have been abstracting she could have been abstracting we could have been abstracting you could have been abstracting they could have been abstracting
Négation
Forme simple
I couldn't abstract you couldn't abstract she couldn't abstract we couldn't abstract you couldn't abstract they couldn't abstract
Forme en V-ing
I couldn't be abstracting you couldn't be abstracting she couldn't be abstracting we couldn't be abstracting you couldn't be abstracting they couldn't be abstracting
Perfect
I couldn't have abstracted you couldn't have abstracted she couldn't have abstracted we couldn't have abstracted you couldn't have abstracted they couldn't have abstracted
Perfect en V-ing
I couldn't have been abstracting you couldn't have been abstracting she couldn't have been abstracting we couldn't have been abstracting you couldn't have been abstracting they couldn't have been abstracting
Forme interrogative
Forme simple
could I abstract? could you abstract? could she abstract? could we abstract? could you abstract? could they abstract?
Forme en V-ing
could I be abstracting? could you be abstracting? could she be abstracting? could we be abstracting? could you be abstracting? could they be abstracting?
Perfect
could I have abstracted? could you have abstracted? could she have abstracted? could we have abstracted? could you have abstracted? could they have abstracted?
Perfect en V-ing
could I have been abstracting? could you have been abstracting? could she have been abstracting? could we have been abstracting? could you have been abstracting? could they have been abstracting?
Forme interro-négative
Forme simple
couldn't I abstract? couldn't you abstract? couldn't she abstract? couldn't we abstract? couldn't you abstract? couldn't they abstract?
Forme en V-ing
couldn't I be abstracting? couldn't you be abstracting? couldn't she be abstracting? couldn't we be abstracting? couldn't you be abstracting? couldn't they be abstracting?
Perfect
couldn't I have abstracted? couldn't you have abstracted? couldn't she have abstracted? couldn't we have abstracted? couldn't you have abstracted? couldn't they have abstracted?
Perfect en V-ing
couldn't I have been abstracting? couldn't you have been abstracting? couldn't she have been abstracting? couldn't we have been abstracting? couldn't you have been abstracting? couldn't they have been abstracting?