I could leister you could leister she could leister we could leister you could leister they could leister
Forma con 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
Perfecto
I could have leistered you could have leistered she could have leistered we could have leistered you could have leistered they could have leistered
Perfecto con 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
Negación
Forma simple
I couldn't leister you couldn't leister she couldn't leister we couldn't leister you couldn't leister they couldn't leister
Forma con V-ing
I couldn't be leistering you couldn't be leistering she couldn't be leistering we couldn't be leistering you couldn't be leistering they couldn't be leistering
Perfecto
I couldn't have leistered you couldn't have leistered she couldn't have leistered we couldn't have leistered you couldn't have leistered they couldn't have leistered
Perfecto con V-ing
I couldn't have been leistering you couldn't have been leistering she couldn't have been leistering we couldn't have been leistering you couldn't have been leistering they couldn't have been leistering
Forma interrogativa
Forma simple
could I leister? could you leister? could she leister? could we leister? could you leister? could they leister?
Forma con 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?
Perfecto
could I have leistered? could you have leistered? could she have leistered? could we have leistered? could you have leistered? could they have leistered?
Perfecto con 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?
Forma interro-negativa
Forma simple
couldn't I leister? couldn't you leister? couldn't she leister? couldn't we leister? couldn't you leister? couldn't they leister?
Forma con V-ing
couldn't I be leistering? couldn't you be leistering? couldn't she be leistering? couldn't we be leistering? couldn't you be leistering? couldn't they be leistering?
Perfecto
couldn't I have leistered? couldn't you have leistered? couldn't she have leistered? couldn't we have leistered? couldn't you have leistered? couldn't they have leistered?
Perfecto con V-ing
couldn't I have been leistering? couldn't you have been leistering? couldn't she have been leistering? couldn't we have been leistering? couldn't you have been leistering? couldn't they have been leistering?