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