I could bide you could bide he could bide we could bide you could bide they could bide
V-ing form
I could be biding you could be biding he could be biding we could be biding you could be biding they could be biding
Perfect
I could have bided you could have bided he could have bided we could have bided you could have bided they could have bided
V-ing perfect
I could have been biding you could have been biding he could have been biding we could have been biding you could have been biding they could have been biding
Negation
Simple form
I could not bide you could not bide he could not bide we could not bide you could not bide they could not bide
V-ing form
I could not be biding you could not be biding he could not be biding we could not be biding you could not be biding they could not be biding
Perfect
I could not have bided you could not have bided he could not have bided we could not have bided you could not have bided they could not have bided
V-ing perfect
I could not have been biding you could not have been biding he could not have been biding we could not have been biding you could not have been biding they could not have been biding
Interrogative form
Simple form
could I bide? could you bide? could he bide? could we bide? could you bide? could they bide?
V-ing form
could I be biding? could you be biding? could he be biding? could we be biding? could you be biding? could they be biding?
Perfect
could I have bided? could you have bided? could he have bided? could we have bided? could you have bided? could they have bided?
V-ing perfect
could I have been biding? could you have been biding? could he have been biding? could we have been biding? could you have been biding? could they have been biding?
Interro-negative form
Simple form
could I not bide? could you not bide? could he not bide? could we not bide? could you not bide? could they not bide?
V-ing form
could I not be biding? could you not be biding? could he not be biding? could we not be biding? could you not be biding? could they not be biding?
Perfect
could I not have bided? could you not have bided? could he not have bided? could we not have bided? could you not have bided? could they not have bided?
V-ing perfect
could I not have been biding? could you not have been biding? could he not have been biding? could we not have been biding? could you not have been biding? could they not have been biding?