English verb conjugation
COULD LABOUR

Regular verb: labour - laboured - laboured

Affirmation

Simple form	V-ing form
I could labour you could labour he could labour we could labour you could labour they could labour	I could be labouring you could be labouring he could be labouring we could be labouring you could be labouring they could be labouring
Perfect	V-ing perfect
I could have laboured you could have laboured he could have laboured we could have laboured you could have laboured they could have laboured	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

Negation

Simple form	V-ing form
I could not labour you could not labour he could not labour we could not labour you could not labour they could not labour	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
Perfect	V-ing perfect
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	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

Interrogative form

Simple form	V-ing form
could I labour? could you labour? could he labour? could we labour? could you labour? could they labour?	could I be labouring? could you be labouring? could he be labouring? could we be labouring? could you be labouring? could they be labouring?
Perfect	V-ing perfect
could I have laboured? could you have laboured? could he have laboured? could we have laboured? could you have laboured? could they have laboured?	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?

Interro-negative form

Simple form	V-ing form
could I not labour? could you not labour? could he not labour? could we not labour? could you not labour? could they not labour?	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?
Perfect	V-ing perfect
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?	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?