English verb conjugation
COULD EXTOL

Regular verb: extol - extolled - extolled

Affirmation

Simple form	V-ing form
I could extol you could extol he could extol we could extol you could extol they could extol	I could be extolling you could be extolling he could be extolling we could be extolling you could be extolling they could be extolling
Perfect	V-ing perfect
I could have extolled you could have extolled he could have extolled we could have extolled you could have extolled they could have extolled	I could have been extolling you could have been extolling he could have been extolling we could have been extolling you could have been extolling they could have been extolling

Negation

Simple form	V-ing form
I could not extol you could not extol he could not extol we could not extol you could not extol they could not extol	I could not be extolling you could not be extolling he could not be extolling we could not be extolling you could not be extolling they could not be extolling
Perfect	V-ing perfect
I could not have extolled you could not have extolled he could not have extolled we could not have extolled you could not have extolled they could not have extolled	I could not have been extolling you could not have been extolling he could not have been extolling we could not have been extolling you could not have been extolling they could not have been extolling

Interrogative form

Simple form	V-ing form
could I extol? could you extol? could he extol? could we extol? could you extol? could they extol?	could I be extolling? could you be extolling? could he be extolling? could we be extolling? could you be extolling? could they be extolling?
Perfect	V-ing perfect
could I have extolled? could you have extolled? could he have extolled? could we have extolled? could you have extolled? could they have extolled?	could I have been extolling? could you have been extolling? could he have been extolling? could we have been extolling? could you have been extolling? could they have been extolling?

Interro-negative form

Simple form	V-ing form
could I not extol? could you not extol? could he not extol? could we not extol? could you not extol? could they not extol?	could I not be extolling? could you not be extolling? could he not be extolling? could we not be extolling? could you not be extolling? could they not be extolling?
Perfect	V-ing perfect
could I not have extolled? could you not have extolled? could he not have extolled? could we not have extolled? could you not have extolled? could they not have extolled?	could I not have been extolling? could you not have been extolling? could he not have been extolling? could we not have been extolling? could you not have been extolling? could they not have been extolling?