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