I could labour you could labour he could labour we could labour you could labour they could labour
Forma com V-ing
I could be labouring you could be labouring he could be labouring we could be labouring you could be labouring they could be labouring
Perfeito
I could have laboured you could have laboured he could have laboured we could have laboured you could have laboured they could have laboured
Perfeito com V-ing
I could have been labouring you could have been labouring he could have been labouring we could have been labouring you could have been labouring they could have been labouring
Negação
Forma simple
I could not labour you could not labour he could not labour we could not labour you could not labour they could not labour
Forma com V-ing
I could not be labouring you could not be labouring he could not be labouring we could not be labouring you could not be labouring they could not be labouring
Perfeito
I could not have laboured you could not have laboured he could not have laboured we could not have laboured you could not have laboured they could not have laboured
Perfeito com V-ing
I could not have been labouring you could not have been labouring he could not have been labouring we could not have been labouring you could not have been labouring they could not have been labouring
Forma interrogativa
Forma simple
could I labour? could you labour? could he labour? could we labour? could you labour? could they labour?
Forma com V-ing
could I be labouring? could you be labouring? could he be labouring? could we be labouring? could you be labouring? could they be labouring?
Perfeito
could I have laboured? could you have laboured? could he have laboured? could we have laboured? could you have laboured? could they have laboured?
Perfeito com V-ing
could I have been labouring? could you have been labouring? could he have been labouring? could we have been labouring? could you have been labouring? could they have been labouring?
Forma interro-Negação
Forma simple
could I not labour? could you not labour? could he not labour? could we not labour? could you not labour? could they not labour?
Forma com V-ing
could I not be labouring? could you not be labouring? could he not be labouring? could we not be labouring? could you not be labouring? could they not be labouring?
Perfeito
could I not have laboured? could you not have laboured? could he not have laboured? could we not have laboured? could you not have laboured? could they not have laboured?
Perfeito com V-ing
could I not have been labouring? could you not have been labouring? could he not have been labouring? could we not have been labouring? could you not have been labouring? could they not have been labouring?