must stultify
Regular verb: stultify - stultified- stultified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must stultify
you must stultify
he must stultify
we must stultify
you must stultify
they must stultify 	I must be stultifying
you must be stultifying
he must be stultifying
we must be stultifying
you must be stultifying
they must be stultifying	I must have stultified
you must have stultified
he must have stultified
we must have stultified
you must have stultified
they must have stultified	I must have been stultifying
you must have been stultifying
he must have been stultifying
we must have been stultifying
you must have been stultifying
they must have been stultifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not stultify
you must not stultify
he must not stultify
we must not stultify
you must not stultify
they must not stultify 	I must not be stultifying
you must not be stultifying
he must not be stultifying
we must not be stultifying
you must not be stultifying
they must not be stultifying	I must not have stultified
you must not have stultified
he must not have stultified
we must not have stultified
you must not have stultified
they must not have stultified	I must not have been stultifying
you must not have been stultifying
he must not have been stultifying
we must not have been stultifying
you must not have been stultifying
they must not have been stultifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I stultify?
must you stultify?
must he stultify?
must we stultify?
must you stultify?
must they stultify? 	must I be stultifying?
must you be stultifying?
must he be stultifying?
must we be stultifying?
must you be stultifying?
must they be stultifying? 	must I have stultified?
must you have stultified?
must he have stultified?
must we have stultified?
must you have stultified?
must they have stultified? 	must I have been stultifying?
must you have been stultifying?
must he have been stultifying?
must we have been stultifying?
must you have been stultifying?
must they have been stultifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not stultify?
must you not stultify?
must he not stultify?
must we not stultify?
must you not stultify?
must they not stultify? 	must I not be stultifying?
must you not be stultifying?
must he not be stultifying?
must we not be stultifying?
must you not be stultifying?
must they not be stultifying? 	must I not have stultified?
must you not have stultified?
must he not have stultified?
must we not have stultified?
must you not have stultified?
must they not have stultified? 	must I not have been stultifying?
must you not have been stultifying?
must he not have been stultifying?
must we not have been stultifying?
must you not have been stultifying?
must they not have been stultifying?