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