English verb conjugation
COULD KEN

Regular verb: ken - kened - kened

Affirmation

Simple form	V-ing form
I could ken you could ken he could ken we could ken you could ken they could ken	I could be kening you could be kening he could be kening we could be kening you could be kening they could be kening
Perfect	V-ing perfect
I could have kened you could have kened he could have kened we could have kened you could have kened they could have kened	I could have been kening you could have been kening he could have been kening we could have been kening you could have been kening they could have been kening

Negation

Simple form	V-ing form
I couldn't ken you couldn't ken he couldn't ken we couldn't ken you couldn't ken they couldn't ken	I couldn't be kening you couldn't be kening he couldn't be kening we couldn't be kening you couldn't be kening they couldn't be kening
Perfect	V-ing perfect
I couldn't have kened you couldn't have kened he couldn't have kened we couldn't have kened you couldn't have kened they couldn't have kened	I couldn't have been kening you couldn't have been kening he couldn't have been kening we couldn't have been kening you couldn't have been kening they couldn't have been kening

Interrogative form

Simple form	V-ing form
could I ken? could you ken? could he ken? could we ken? could you ken? could they ken?	could I be kening? could you be kening? could he be kening? could we be kening? could you be kening? could they be kening?
Perfect	V-ing perfect
could I have kened? could you have kened? could he have kened? could we have kened? could you have kened? could they have kened?	could I have been kening? could you have been kening? could he have been kening? could we have been kening? could you have been kening? could they have been kening?

Interro-negative form

Simple form	V-ing form
couldn't I ken? couldn't you ken? couldn't he ken? couldn't we ken? couldn't you ken? couldn't they ken?	couldn't I be kening? couldn't you be kening? couldn't he be kening? couldn't we be kening? couldn't you be kening? couldn't they be kening?
Perfect	V-ing perfect
couldn't I have kened? couldn't you have kened? couldn't he have kened? couldn't we have kened? couldn't you have kened? couldn't they have kened?	couldn't I have been kening? couldn't you have been kening? couldn't he have been kening? couldn't we have been kening? couldn't you have been kening? couldn't they have been kening?