English verb conjugation
COULD KEEL

Regular verb: keel - keeled - keeled

Affirmation

Simple form	V-ing form
I could keel you could keel he could keel we could keel you could keel they could keel	I could be keeling you could be keeling he could be keeling we could be keeling you could be keeling they could be keeling
Perfect	V-ing perfect
I could have keeled you could have keeled he could have keeled we could have keeled you could have keeled they could have keeled	I could have been keeling you could have been keeling he could have been keeling we could have been keeling you could have been keeling they could have been keeling

Negation

Simple form	V-ing form
I couldn't keel you couldn't keel he couldn't keel we couldn't keel you couldn't keel they couldn't keel	I couldn't be keeling you couldn't be keeling he couldn't be keeling we couldn't be keeling you couldn't be keeling they couldn't be keeling
Perfect	V-ing perfect
I couldn't have keeled you couldn't have keeled he couldn't have keeled we couldn't have keeled you couldn't have keeled they couldn't have keeled	I couldn't have been keeling you couldn't have been keeling he couldn't have been keeling we couldn't have been keeling you couldn't have been keeling they couldn't have been keeling

Interrogative form

Simple form	V-ing form
could I keel? could you keel? could he keel? could we keel? could you keel? could they keel?	could I be keeling? could you be keeling? could he be keeling? could we be keeling? could you be keeling? could they be keeling?
Perfect	V-ing perfect
could I have keeled? could you have keeled? could he have keeled? could we have keeled? could you have keeled? could they have keeled?	could I have been keeling? could you have been keeling? could he have been keeling? could we have been keeling? could you have been keeling? could they have been keeling?

Interro-negative form

Simple form	V-ing form
couldn't I keel? couldn't you keel? couldn't he keel? couldn't we keel? couldn't you keel? couldn't they keel?	couldn't I be keeling? couldn't you be keeling? couldn't he be keeling? couldn't we be keeling? couldn't you be keeling? couldn't they be keeling?
Perfect	V-ing perfect
couldn't I have keeled? couldn't you have keeled? couldn't he have keeled? couldn't we have keeled? couldn't you have keeled? couldn't they have keeled?	couldn't I have been keeling? couldn't you have been keeling? couldn't he have been keeling? couldn't we have been keeling? couldn't you have been keeling? couldn't they have been keeling?