I could counterclaim you could counterclaim she could counterclaim we could counterclaim you could counterclaim they could counterclaim
V-ing form
I could be counterclaiming you could be counterclaiming she could be counterclaiming we could be counterclaiming you could be counterclaiming they could be counterclaiming
Perfect
I could have counterclaimed you could have counterclaimed she could have counterclaimed we could have counterclaimed you could have counterclaimed they could have counterclaimed
V-ing perfect
I could have been counterclaiming you could have been counterclaiming she could have been counterclaiming we could have been counterclaiming you could have been counterclaiming they could have been counterclaiming
Negation
Simple form
I could not counterclaim you could not counterclaim she could not counterclaim we could not counterclaim you could not counterclaim they could not counterclaim
V-ing form
I could not be counterclaiming you could not be counterclaiming she could not be counterclaiming we could not be counterclaiming you could not be counterclaiming they could not be counterclaiming
Perfect
I could not have counterclaimed you could not have counterclaimed she could not have counterclaimed we could not have counterclaimed you could not have counterclaimed they could not have counterclaimed
V-ing perfect
I could not have been counterclaiming you could not have been counterclaiming she could not have been counterclaiming we could not have been counterclaiming you could not have been counterclaiming they could not have been counterclaiming
Interrogative form
Simple form
could I counterclaim? could you counterclaim? could she counterclaim? could we counterclaim? could you counterclaim? could they counterclaim?
V-ing form
could I be counterclaiming? could you be counterclaiming? could she be counterclaiming? could we be counterclaiming? could you be counterclaiming? could they be counterclaiming?
Perfect
could I have counterclaimed? could you have counterclaimed? could she have counterclaimed? could we have counterclaimed? could you have counterclaimed? could they have counterclaimed?
V-ing perfect
could I have been counterclaiming? could you have been counterclaiming? could she have been counterclaiming? could we have been counterclaiming? could you have been counterclaiming? could they have been counterclaiming?
Interro-negative form
Simple form
could I not counterclaim? could you not counterclaim? could she not counterclaim? could we not counterclaim? could you not counterclaim? could they not counterclaim?
V-ing form
could I not be counterclaiming? could you not be counterclaiming? could she not be counterclaiming? could we not be counterclaiming? could you not be counterclaiming? could they not be counterclaiming?
Perfect
could I not have counterclaimed? could you not have counterclaimed? could she not have counterclaimed? could we not have counterclaimed? could you not have counterclaimed? could they not have counterclaimed?
V-ing perfect
could I not have been counterclaiming? could you not have been counterclaiming? could she not have been counterclaiming? could we not have been counterclaiming? could you not have been counterclaiming? could they not have been counterclaiming?