Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could learn by you could learn by he could learn by we could learn by you could learn by they could learn by
V-ing form
I could be learn bying you could be learn bying he could be learn bying we could be learn bying you could be learn bying they could be learn bying
Perfect
I could have learn bied you could have learn bied he could have learn bied we could have learn bied you could have learn bied they could have learn bied
V-ing perfect
I could have been learn bying you could have been learn bying he could have been learn bying we could have been learn bying you could have been learn bying they could have been learn bying
Negation
Simple form
I couldn't learn by you couldn't learn by he couldn't learn by we couldn't learn by you couldn't learn by they couldn't learn by
V-ing form
I couldn't be learn bying you couldn't be learn bying he couldn't be learn bying we couldn't be learn bying you couldn't be learn bying they couldn't be learn bying
Perfect
I couldn't have learn bied you couldn't have learn bied he couldn't have learn bied we couldn't have learn bied you couldn't have learn bied they couldn't have learn bied
V-ing perfect
I couldn't have been learn bying you couldn't have been learn bying he couldn't have been learn bying we couldn't have been learn bying you couldn't have been learn bying they couldn't have been learn bying
Interrogative form
Simple form
could I learn by? could you learn by? could he learn by? could we learn by? could you learn by? could they learn by?
V-ing form
could I be learn bying? could you be learn bying? could he be learn bying? could we be learn bying? could you be learn bying? could they be learn bying?
Perfect
could I have learn bied? could you have learn bied? could he have learn bied? could we have learn bied? could you have learn bied? could they have learn bied?
V-ing perfect
could I have been learn bying? could you have been learn bying? could he have been learn bying? could we have been learn bying? could you have been learn bying? could they have been learn bying?
Interro-negative form
Simple form
couldn't I learn by? couldn't you learn by? couldn't he learn by? couldn't we learn by? couldn't you learn by? couldn't they learn by?
V-ing form
couldn't I be learn bying? couldn't you be learn bying? couldn't he be learn bying? couldn't we be learn bying? couldn't you be learn bying? couldn't they be learn bying?
Perfect
couldn't I have learn bied? couldn't you have learn bied? couldn't he have learn bied? couldn't we have learn bied? couldn't you have learn bied? couldn't they have learn bied?
V-ing perfect
couldn't I have been learn bying? couldn't you have been learn bying? couldn't he have been learn bying? couldn't we have been learn bying? couldn't you have been learn bying? couldn't they have been learn bying?