must extol
Regular verb: extol - extolled- extolled

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

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

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

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