I could limb you could limb he could limb we could limb you could limb they could limb
V-ing form
I could be limbing you could be limbing he could be limbing we could be limbing you could be limbing they could be limbing
Perfect
I could have limbed you could have limbed he could have limbed we could have limbed you could have limbed they could have limbed
V-ing perfect
I could have been limbing you could have been limbing he could have been limbing we could have been limbing you could have been limbing they could have been limbing
Negation
Simple form
I could not limb you could not limb he could not limb we could not limb you could not limb they could not limb
V-ing form
I could not be limbing you could not be limbing he could not be limbing we could not be limbing you could not be limbing they could not be limbing
Perfect
I could not have limbed you could not have limbed he could not have limbed we could not have limbed you could not have limbed they could not have limbed
V-ing perfect
I could not have been limbing you could not have been limbing he could not have been limbing we could not have been limbing you could not have been limbing they could not have been limbing
Interrogative form
Simple form
could I limb? could you limb? could he limb? could we limb? could you limb? could they limb?
V-ing form
could I be limbing? could you be limbing? could he be limbing? could we be limbing? could you be limbing? could they be limbing?
Perfect
could I have limbed? could you have limbed? could he have limbed? could we have limbed? could you have limbed? could they have limbed?
V-ing perfect
could I have been limbing? could you have been limbing? could he have been limbing? could we have been limbing? could you have been limbing? could they have been limbing?
Interro-negative form
Simple form
could I not limb? could you not limb? could he not limb? could we not limb? could you not limb? could they not limb?
V-ing form
could I not be limbing? could you not be limbing? could he not be limbing? could we not be limbing? could you not be limbing? could they not be limbing?
Perfect
could I not have limbed? could you not have limbed? could he not have limbed? could we not have limbed? could you not have limbed? could they not have limbed?
V-ing perfect
could I not have been limbing? could you not have been limbing? could he not have been limbing? could we not have been limbing? could you not have been limbing? could they not have been limbing?