I could blame you could blame she could blame we could blame you could blame they could blame
V-ing form
I could be blaming you could be blaming she could be blaming we could be blaming you could be blaming they could be blaming
Perfect
I could have blamed you could have blamed she could have blamed we could have blamed you could have blamed they could have blamed
V-ing perfect
I could have been blaming you could have been blaming she could have been blaming we could have been blaming you could have been blaming they could have been blaming
Negation
Simple form
I could not blame you could not blame she could not blame we could not blame you could not blame they could not blame
V-ing form
I could not be blaming you could not be blaming she could not be blaming we could not be blaming you could not be blaming they could not be blaming
Perfect
I could not have blamed you could not have blamed she could not have blamed we could not have blamed you could not have blamed they could not have blamed
V-ing perfect
I could not have been blaming you could not have been blaming she could not have been blaming we could not have been blaming you could not have been blaming they could not have been blaming
Interrogative form
Simple form
could I blame? could you blame? could she blame? could we blame? could you blame? could they blame?
V-ing form
could I be blaming? could you be blaming? could she be blaming? could we be blaming? could you be blaming? could they be blaming?
Perfect
could I have blamed? could you have blamed? could she have blamed? could we have blamed? could you have blamed? could they have blamed?
V-ing perfect
could I have been blaming? could you have been blaming? could she have been blaming? could we have been blaming? could you have been blaming? could they have been blaming?
Interro-negative form
Simple form
could I not blame? could you not blame? could she not blame? could we not blame? could you not blame? could they not blame?
V-ing form
could I not be blaming? could you not be blaming? could she not be blaming? could we not be blaming? could you not be blaming? could they not be blaming?
Perfect
could I not have blamed? could you not have blamed? could she not have blamed? could we not have blamed? could you not have blamed? could they not have blamed?
V-ing perfect
could I not have been blaming? could you not have been blaming? could she not have been blaming? could we not have been blaming? could you not have been blaming? could they not have been blaming?