English verb conjugation
COULD BID

Irregular verb: bid - bid, bade - bid, bidden

Affirmation

Simple form	V-ing form
I could bid you could bid he could bid we could bid you could bid they could bid	I could be bidding you could be bidding he could be bidding we could be bidding you could be bidding they could be bidding
Perfect	V-ing perfect
I could have bid, bidden you could have bid, bidden he could have bid, bidden we could have bid, bidden you could have bid, bidden they could have bid, bidden	I could have been bidding you could have been bidding he could have been bidding we could have been bidding you could have been bidding they could have been bidding

Negation

Simple form	V-ing form
I could not bid you could not bid he could not bid we could not bid you could not bid they could not bid	I could not be bidding you could not be bidding he could not be bidding we could not be bidding you could not be bidding they could not be bidding
Perfect	V-ing perfect
I could not have bid, bidden you could not have bid, bidden he could not have bid, bidden we could not have bid, bidden you could not have bid, bidden they could not have bid, bidden	I could not have been bidding you could not have been bidding he could not have been bidding we could not have been bidding you could not have been bidding they could not have been bidding

Interrogative form

Simple form	V-ing form
could I bid? could you bid? could he bid? could we bid? could you bid? could they bid?	could I be bidding? could you be bidding? could he be bidding? could we be bidding? could you be bidding? could they be bidding?
Perfect	V-ing perfect
could I have bid, bidden? could you have bid, bidden? could he have bid, bidden? could we have bid, bidden? could you have bid, bidden? could they have bid, bidden?	could I have been bidding? could you have been bidding? could he have been bidding? could we have been bidding? could you have been bidding? could they have been bidding?

Interro-negative form

Simple form	V-ing form
could I not bid? could you not bid? could he not bid? could we not bid? could you not bid? could they not bid?	could I not be bidding? could you not be bidding? could he not be bidding? could we not be bidding? could you not be bidding? could they not be bidding?
Perfect	V-ing perfect
could I not have bid, bidden? could you not have bid, bidden? could he not have bid, bidden? could we not have bid, bidden? could you not have bid, bidden? could they not have bid, bidden?	could I not have been bidding? could you not have been bidding? could he not have been bidding? could we not have been bidding? could you not have been bidding? could they not have been bidding?