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