Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could vae in you could vae in she could vae in we could vae in you could vae in they could vae in
V-ing form
I could be vae ining you could be vae ining she could be vae ining we could be vae ining you could be vae ining they could be vae ining
Perfect
I could have vae ined you could have vae ined she could have vae ined we could have vae ined you could have vae ined they could have vae ined
V-ing perfect
I could have been vae ining you could have been vae ining she could have been vae ining we could have been vae ining you could have been vae ining they could have been vae ining
Negation
Simple form
I could not vae in you could not vae in she could not vae in we could not vae in you could not vae in they could not vae in
V-ing form
I could not be vae ining you could not be vae ining she could not be vae ining we could not be vae ining you could not be vae ining they could not be vae ining
Perfect
I could not have vae ined you could not have vae ined she could not have vae ined we could not have vae ined you could not have vae ined they could not have vae ined
V-ing perfect
I could not have been vae ining you could not have been vae ining she could not have been vae ining we could not have been vae ining you could not have been vae ining they could not have been vae ining
Interrogative form
Simple form
could I vae in? could you vae in? could she vae in? could we vae in? could you vae in? could they vae in?
V-ing form
could I be vae ining? could you be vae ining? could she be vae ining? could we be vae ining? could you be vae ining? could they be vae ining?
Perfect
could I have vae ined? could you have vae ined? could she have vae ined? could we have vae ined? could you have vae ined? could they have vae ined?
V-ing perfect
could I have been vae ining? could you have been vae ining? could she have been vae ining? could we have been vae ining? could you have been vae ining? could they have been vae ining?
Interro-negative form
Simple form
could I not vae in? could you not vae in? could she not vae in? could we not vae in? could you not vae in? could they not vae in?
V-ing form
could I not be vae ining? could you not be vae ining? could she not be vae ining? could we not be vae ining? could you not be vae ining? could they not be vae ining?
Perfect
could I not have vae ined? could you not have vae ined? could she not have vae ined? could we not have vae ined? could you not have vae ined? could they not have vae ined?
V-ing perfect
could I not have been vae ining? could you not have been vae ining? could she not have been vae ining? could we not have been vae ining? could you not have been vae ining? could they not have been vae ining?