Conjugación del verbo inglés
COULD CONFIRM

Verbo regular: confirm - confirmed - confirmed

Afirmación

Forma simple	Forma con V-ing
I could confirm you could confirm she could confirm we could confirm you could confirm they could confirm	I could be confirming you could be confirming she could be confirming we could be confirming you could be confirming they could be confirming
Perfecto	Perfecto con V-ing
I could have confirmed you could have confirmed she could have confirmed we could have confirmed you could have confirmed they could have confirmed	I could have been confirming you could have been confirming she could have been confirming we could have been confirming you could have been confirming they could have been confirming

Negación

Forma simple	Forma con V-ing
I couldn't confirm you couldn't confirm she couldn't confirm we couldn't confirm you couldn't confirm they couldn't confirm	I couldn't be confirming you couldn't be confirming she couldn't be confirming we couldn't be confirming you couldn't be confirming they couldn't be confirming
Perfecto	Perfecto con V-ing
I couldn't have confirmed you couldn't have confirmed she couldn't have confirmed we couldn't have confirmed you couldn't have confirmed they couldn't have confirmed	I couldn't have been confirming you couldn't have been confirming she couldn't have been confirming we couldn't have been confirming you couldn't have been confirming they couldn't have been confirming

Forma interrogativa

Forma simple	Forma con V-ing
could I confirm? could you confirm? could she confirm? could we confirm? could you confirm? could they confirm?	could I be confirming? could you be confirming? could she be confirming? could we be confirming? could you be confirming? could they be confirming?
Perfecto	Perfecto con V-ing
could I have confirmed? could you have confirmed? could she have confirmed? could we have confirmed? could you have confirmed? could they have confirmed?	could I have been confirming? could you have been confirming? could she have been confirming? could we have been confirming? could you have been confirming? could they have been confirming?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I confirm? couldn't you confirm? couldn't she confirm? couldn't we confirm? couldn't you confirm? couldn't they confirm?	couldn't I be confirming? couldn't you be confirming? couldn't she be confirming? couldn't we be confirming? couldn't you be confirming? couldn't they be confirming?
Perfecto	Perfecto con V-ing
couldn't I have confirmed? couldn't you have confirmed? couldn't she have confirmed? couldn't we have confirmed? couldn't you have confirmed? couldn't they have confirmed?	couldn't I have been confirming? couldn't you have been confirming? couldn't she have been confirming? couldn't we have been confirming? couldn't you have been confirming? couldn't they have been confirming?