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

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