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