Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could relinquish surrender you could relinquish surrender he could relinquish surrender we could relinquish surrender you could relinquish surrender they could relinquish surrender
V-ing form
I could be relinquish surrendering you could be relinquish surrendering he could be relinquish surrendering we could be relinquish surrendering you could be relinquish surrendering they could be relinquish surrendering
Perfect
I could have relinquish surrendered you could have relinquish surrendered he could have relinquish surrendered we could have relinquish surrendered you could have relinquish surrendered they could have relinquish surrendered
V-ing perfect
I could have been relinquish surrendering you could have been relinquish surrendering he could have been relinquish surrendering we could have been relinquish surrendering you could have been relinquish surrendering they could have been relinquish surrendering
Negation
Simple form
I could not relinquish surrender you could not relinquish surrender he could not relinquish surrender we could not relinquish surrender you could not relinquish surrender they could not relinquish surrender
V-ing form
I could not be relinquish surrendering you could not be relinquish surrendering he could not be relinquish surrendering we could not be relinquish surrendering you could not be relinquish surrendering they could not be relinquish surrendering
Perfect
I could not have relinquish surrendered you could not have relinquish surrendered he could not have relinquish surrendered we could not have relinquish surrendered you could not have relinquish surrendered they could not have relinquish surrendered
V-ing perfect
I could not have been relinquish surrendering you could not have been relinquish surrendering he could not have been relinquish surrendering we could not have been relinquish surrendering you could not have been relinquish surrendering they could not have been relinquish surrendering
Interrogative form
Simple form
could I relinquish surrender? could you relinquish surrender? could he relinquish surrender? could we relinquish surrender? could you relinquish surrender? could they relinquish surrender?
V-ing form
could I be relinquish surrendering? could you be relinquish surrendering? could he be relinquish surrendering? could we be relinquish surrendering? could you be relinquish surrendering? could they be relinquish surrendering?
Perfect
could I have relinquish surrendered? could you have relinquish surrendered? could he have relinquish surrendered? could we have relinquish surrendered? could you have relinquish surrendered? could they have relinquish surrendered?
V-ing perfect
could I have been relinquish surrendering? could you have been relinquish surrendering? could he have been relinquish surrendering? could we have been relinquish surrendering? could you have been relinquish surrendering? could they have been relinquish surrendering?
Interro-negative form
Simple form
could I not relinquish surrender? could you not relinquish surrender? could he not relinquish surrender? could we not relinquish surrender? could you not relinquish surrender? could they not relinquish surrender?
V-ing form
could I not be relinquish surrendering? could you not be relinquish surrendering? could he not be relinquish surrendering? could we not be relinquish surrendering? could you not be relinquish surrendering? could they not be relinquish surrendering?
Perfect
could I not have relinquish surrendered? could you not have relinquish surrendered? could he not have relinquish surrendered? could we not have relinquish surrendered? could you not have relinquish surrendered? could they not have relinquish surrendered?
V-ing perfect
could I not have been relinquish surrendering? could you not have been relinquish surrendering? could he not have been relinquish surrendering? could we not have been relinquish surrendering? could you not have been relinquish surrendering? could they not have been relinquish surrendering?