English verb conjugation
COULD TAMBOUR

Regular verb: tambour - tamboured - tamboured

Affirmation

Simple form	V-ing form
I could tambour you could tambour he could tambour we could tambour you could tambour they could tambour	I could be tambouring you could be tambouring he could be tambouring we could be tambouring you could be tambouring they could be tambouring
Perfect	V-ing perfect
I could have tamboured you could have tamboured he could have tamboured we could have tamboured you could have tamboured they could have tamboured	I could have been tambouring you could have been tambouring he could have been tambouring we could have been tambouring you could have been tambouring they could have been tambouring

Negation

Simple form	V-ing form
I could not tambour you could not tambour he could not tambour we could not tambour you could not tambour they could not tambour	I could not be tambouring you could not be tambouring he could not be tambouring we could not be tambouring you could not be tambouring they could not be tambouring
Perfect	V-ing perfect
I could not have tamboured you could not have tamboured he could not have tamboured we could not have tamboured you could not have tamboured they could not have tamboured	I could not have been tambouring you could not have been tambouring he could not have been tambouring we could not have been tambouring you could not have been tambouring they could not have been tambouring

Interrogative form

Simple form	V-ing form
could I tambour? could you tambour? could he tambour? could we tambour? could you tambour? could they tambour?	could I be tambouring? could you be tambouring? could he be tambouring? could we be tambouring? could you be tambouring? could they be tambouring?
Perfect	V-ing perfect
could I have tamboured? could you have tamboured? could he have tamboured? could we have tamboured? could you have tamboured? could they have tamboured?	could I have been tambouring? could you have been tambouring? could he have been tambouring? could we have been tambouring? could you have been tambouring? could they have been tambouring?

Interro-negative form

Simple form	V-ing form
could I not tambour? could you not tambour? could he not tambour? could we not tambour? could you not tambour? could they not tambour?	could I not be tambouring? could you not be tambouring? could he not be tambouring? could we not be tambouring? could you not be tambouring? could they not be tambouring?
Perfect	V-ing perfect
could I not have tamboured? could you not have tamboured? could he not have tamboured? could we not have tamboured? could you not have tamboured? could they not have tamboured?	could I not have been tambouring? could you not have been tambouring? could he not have been tambouring? could we not have been tambouring? could you not have been tambouring? could they not have been tambouring?