can extol
Regular verb: extol - extolled- extolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can extol
you can extol
she can extol
we can extol
you can extol
they can extol 	I can be extolling
you can be extolling
she can be extolling
we can be extolling
you can be extolling
they can be extolling	I can have extolled
you can have extolled
she 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
she 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 	Perfect 	V-ing perfect 	
I cannot extol
you cannot extol
she cannot extol
we cannot extol
you cannot extol
they cannot extol 	I cannot be extolling
you cannot be extolling
she cannot be extolling
we cannot be extolling
you cannot be extolling
they cannot be extolling	I cannot have extolled
you cannot have extolled
she cannot have extolled
we cannot have extolled
you cannot have extolled
they cannot have extolled	I cannot have been extolling
you cannot have been extolling
she cannot have been extolling
we cannot have been extolling
you cannot have been extolling
they cannot have been extolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I extol?
can you extol?
can she extol?
can we extol?
can you extol?
can they extol? 	can I be extolling?
can you be extolling?
can she be extolling?
can we be extolling?
can you be extolling?
can they be extolling? 	can I have extolled?
can you have extolled?
can she 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 she 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 	Perfect 	V-ing perfect 	
can I not extol?
can you not extol?
can she not extol?
can we not extol?
can you not extol?
can they not extol? 	can I not be extolling?
can you not be extolling?
can she not be extolling?
can we not be extolling?
can you not be extolling?
can they not be extolling? 	can I not have extolled?
can you not have extolled?
can she not have extolled?
can we not have extolled?
can you not have extolled?
can they not have extolled? 	can I not have been extolling?
can you not have been extolling?
can she not have been extolling?
can we not have been extolling?
can you not have been extolling?
can they not have been extolling?