I could trot you could trot he could trot we could trot you could trot they could trot
Forma con V-ing
I could be trotting you could be trotting he could be trotting we could be trotting you could be trotting they could be trotting
Perfecto
I could have trotted you could have trotted he could have trotted we could have trotted you could have trotted they could have trotted
Perfecto con V-ing
I could have been trotting you could have been trotting he could have been trotting we could have been trotting you could have been trotting they could have been trotting
Negación
Forma simple
I couldn't trot you couldn't trot he couldn't trot we couldn't trot you couldn't trot they couldn't trot
Forma con V-ing
I couldn't be trotting you couldn't be trotting he couldn't be trotting we couldn't be trotting you couldn't be trotting they couldn't be trotting
Perfecto
I couldn't have trotted you couldn't have trotted he couldn't have trotted we couldn't have trotted you couldn't have trotted they couldn't have trotted
Perfecto con V-ing
I couldn't have been trotting you couldn't have been trotting he couldn't have been trotting we couldn't have been trotting you couldn't have been trotting they couldn't have been trotting
Forma interrogativa
Forma simple
could I trot? could you trot? could he trot? could we trot? could you trot? could they trot?
Forma con V-ing
could I be trotting? could you be trotting? could he be trotting? could we be trotting? could you be trotting? could they be trotting?
Perfecto
could I have trotted? could you have trotted? could he have trotted? could we have trotted? could you have trotted? could they have trotted?
Perfecto con V-ing
could I have been trotting? could you have been trotting? could he have been trotting? could we have been trotting? could you have been trotting? could they have been trotting?
Forma interro-negativa
Forma simple
couldn't I trot? couldn't you trot? couldn't he trot? couldn't we trot? couldn't you trot? couldn't they trot?
Forma con V-ing
couldn't I be trotting? couldn't you be trotting? couldn't he be trotting? couldn't we be trotting? couldn't you be trotting? couldn't they be trotting?
Perfecto
couldn't I have trotted? couldn't you have trotted? couldn't he have trotted? couldn't we have trotted? couldn't you have trotted? couldn't they have trotted?
Perfecto con V-ing
couldn't I have been trotting? couldn't you have been trotting? couldn't he have been trotting? couldn't we have been trotting? couldn't you have been trotting? couldn't they have been trotting?