I could swing you could swing he could swing we could swing you could swing they could swing
Forma con V-ing
I could be swinging you could be swinging he could be swinging we could be swinging you could be swinging they could be swinging
Perfecto
I could have swung you could have swung he could have swung we could have swung you could have swung they could have swung
Perfecto con V-ing
I could have been swinging you could have been swinging he could have been swinging we could have been swinging you could have been swinging they could have been swinging
Negación
Forma simple
I could not swing you could not swing he could not swing we could not swing you could not swing they could not swing
Forma con V-ing
I could not be swinging you could not be swinging he could not be swinging we could not be swinging you could not be swinging they could not be swinging
Perfecto
I could not have swung you could not have swung he could not have swung we could not have swung you could not have swung they could not have swung
Perfecto con V-ing
I could not have been swinging you could not have been swinging he could not have been swinging we could not have been swinging you could not have been swinging they could not have been swinging
Forma interrogativa
Forma simple
could I swing? could you swing? could he swing? could we swing? could you swing? could they swing?
Forma con V-ing
could I be swinging? could you be swinging? could he be swinging? could we be swinging? could you be swinging? could they be swinging?
Perfecto
could I have swung? could you have swung? could he have swung? could we have swung? could you have swung? could they have swung?
Perfecto con V-ing
could I have been swinging? could you have been swinging? could he have been swinging? could we have been swinging? could you have been swinging? could they have been swinging?
Forma interro-negativa
Forma simple
could I not swing? could you not swing? could he not swing? could we not swing? could you not swing? could they not swing?
Forma con V-ing
could I not be swinging? could you not be swinging? could he not be swinging? could we not be swinging? could you not be swinging? could they not be swinging?
Perfecto
could I not have swung? could you not have swung? could he not have swung? could we not have swung? could you not have swung? could they not have swung?
Perfecto con V-ing
could I not have been swinging? could you not have been swinging? could he not have been swinging? could we not have been swinging? could you not have been swinging? could they not have been swinging?