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