English verb conjugation
CAN EXTOL

Regular verb: extol - extolled - extolled

Affirmation

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

Negation

Simple form	V-ing form
I can't extol you can't extol he can't extol we can't extol you can't extol they can't extol	I can't be extolling you can't be extolling he can't be extolling we can't be extolling you can't be extolling they can't be extolling
Perfect	V-ing perfect
I can't have extolled you can't have extolled he can't have extolled we can't have extolled you can't have extolled they can't have extolled	I can't have been extolling you can't have been extolling he can't have been extolling we can't have been extolling you can't have been extolling they can't have been extolling

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I extol? can't you extol? can't he extol? can't we extol? can't you extol? can't they extol?	can't I be extolling? can't you be extolling? can't he be extolling? can't we be extolling? can't you be extolling? can't they be extolling?
Perfect	V-ing perfect
can't I have extolled? can't you have extolled? can't he have extolled? can't we have extolled? can't you have extolled? can't they have extolled?	can't I have been extolling? can't you have been extolling? can't he have been extolling? can't we have been extolling? can't you have been extolling? can't they have been extolling?