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