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