I could leister you could leister she could leister we could leister you could leister they could leister
Forme en V-ing
I could be leistering you could be leistering she could be leistering we could be leistering you could be leistering they could be leistering
Perfect
I could have leistered you could have leistered she could have leistered we could have leistered you could have leistered they could have leistered
Perfect en V-ing
I could have been leistering you could have been leistering she could have been leistering we could have been leistering you could have been leistering they could have been leistering
Négation
Forme simple
I could not leister you could not leister she could not leister we could not leister you could not leister they could not leister
Forme en V-ing
I could not be leistering you could not be leistering she could not be leistering we could not be leistering you could not be leistering they could not be leistering
Perfect
I could not have leistered you could not have leistered she could not have leistered we could not have leistered you could not have leistered they could not have leistered
Perfect en V-ing
I could not have been leistering you could not have been leistering she could not have been leistering we could not have been leistering you could not have been leistering they could not have been leistering
Forme interrogative
Forme simple
could I leister? could you leister? could she leister? could we leister? could you leister? could they leister?
Forme en V-ing
could I be leistering? could you be leistering? could she be leistering? could we be leistering? could you be leistering? could they be leistering?
Perfect
could I have leistered? could you have leistered? could she have leistered? could we have leistered? could you have leistered? could they have leistered?
Perfect en V-ing
could I have been leistering? could you have been leistering? could she have been leistering? could we have been leistering? could you have been leistering? could they have been leistering?
Forme interro-négative
Forme simple
could I not leister? could you not leister? could she not leister? could we not leister? could you not leister? could they not leister?
Forme en V-ing
could I not be leistering? could you not be leistering? could she not be leistering? could we not be leistering? could you not be leistering? could they not be leistering?
Perfect
could I not have leistered? could you not have leistered? could she not have leistered? could we not have leistered? could you not have leistered? could they not have leistered?
Perfect en V-ing
could I not have been leistering? could you not have been leistering? could she not have been leistering? could we not have been leistering? could you not have been leistering? could they not have been leistering?