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