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