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