I could bade you could bade she could bade we could bade you could bade they could bade
V-ing form
I could be bading you could be bading she could be bading we could be bading you could be bading they could be bading
Perfect
I could have baded you could have baded she could have baded we could have baded you could have baded they could have baded
V-ing perfect
I could have been bading you could have been bading she could have been bading we could have been bading you could have been bading they could have been bading
Negation
Simple form
I could not bade you could not bade she could not bade we could not bade you could not bade they could not bade
V-ing form
I could not be bading you could not be bading she could not be bading we could not be bading you could not be bading they could not be bading
Perfect
I could not have baded you could not have baded she could not have baded we could not have baded you could not have baded they could not have baded
V-ing perfect
I could not have been bading you could not have been bading she could not have been bading we could not have been bading you could not have been bading they could not have been bading
Interrogative form
Simple form
could I bade? could you bade? could she bade? could we bade? could you bade? could they bade?
V-ing form
could I be bading? could you be bading? could she be bading? could we be bading? could you be bading? could they be bading?
Perfect
could I have baded? could you have baded? could she have baded? could we have baded? could you have baded? could they have baded?
V-ing perfect
could I have been bading? could you have been bading? could she have been bading? could we have been bading? could you have been bading? could they have been bading?
Interro-negative form
Simple form
could I not bade? could you not bade? could she not bade? could we not bade? could you not bade? could they not bade?
V-ing form
could I not be bading? could you not be bading? could she not be bading? could we not be bading? could you not be bading? could they not be bading?
Perfect
could I not have baded? could you not have baded? could she not have baded? could we not have baded? could you not have baded? could they not have baded?
V-ing perfect
could I not have been bading? could you not have been bading? could she not have been bading? could we not have been bading? could you not have been bading? could they not have been bading?