must rigidify
Regular verb: rigidify - rigidified- rigidified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must rigidify
you must rigidify
she must rigidify
we must rigidify
you must rigidify
they must rigidify 	I must be rigidifying
you must be rigidifying
she must be rigidifying
we must be rigidifying
you must be rigidifying
they must be rigidifying	I must have rigidified
you must have rigidified
she must have rigidified
we must have rigidified
you must have rigidified
they must have rigidified	I must have been rigidifying
you must have been rigidifying
she must have been rigidifying
we must have been rigidifying
you must have been rigidifying
they must have been rigidifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not rigidify
you must not rigidify
she must not rigidify
we must not rigidify
you must not rigidify
they must not rigidify 	I must not be rigidifying
you must not be rigidifying
she must not be rigidifying
we must not be rigidifying
you must not be rigidifying
they must not be rigidifying	I must not have rigidified
you must not have rigidified
she must not have rigidified
we must not have rigidified
you must not have rigidified
they must not have rigidified	I must not have been rigidifying
you must not have been rigidifying
she must not have been rigidifying
we must not have been rigidifying
you must not have been rigidifying
they must not have been rigidifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I rigidify?
must you rigidify?
must she rigidify?
must we rigidify?
must you rigidify?
must they rigidify? 	must I be rigidifying?
must you be rigidifying?
must she be rigidifying?
must we be rigidifying?
must you be rigidifying?
must they be rigidifying? 	must I have rigidified?
must you have rigidified?
must she have rigidified?
must we have rigidified?
must you have rigidified?
must they have rigidified? 	must I have been rigidifying?
must you have been rigidifying?
must she have been rigidifying?
must we have been rigidifying?
must you have been rigidifying?
must they have been rigidifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not rigidify?
must you not rigidify?
must she not rigidify?
must we not rigidify?
must you not rigidify?
must they not rigidify? 	must I not be rigidifying?
must you not be rigidifying?
must she not be rigidifying?
must we not be rigidifying?
must you not be rigidifying?
must they not be rigidifying? 	must I not have rigidified?
must you not have rigidified?
must she not have rigidified?
must we not have rigidified?
must you not have rigidified?
must they not have rigidified? 	must I not have been rigidifying?
must you not have been rigidifying?
must she not have been rigidifying?
must we not have been rigidifying?
must you not have been rigidifying?
must they not have been rigidifying?