must disvalue
Regular verb: disvalue - disvalued- disvalued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disvalue
you must disvalue
he must disvalue
we must disvalue
you must disvalue
they must disvalue 	I must be disvaluing
you must be disvaluing
he must be disvaluing
we must be disvaluing
you must be disvaluing
they must be disvaluing	I must have disvalued
you must have disvalued
he must have disvalued
we must have disvalued
you must have disvalued
they must have disvalued	I must have been disvaluing
you must have been disvaluing
he must have been disvaluing
we must have been disvaluing
you must have been disvaluing
they must have been disvaluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not disvalue
you must not disvalue
he must not disvalue
we must not disvalue
you must not disvalue
they must not disvalue 	I must not be disvaluing
you must not be disvaluing
he must not be disvaluing
we must not be disvaluing
you must not be disvaluing
they must not be disvaluing	I must not have disvalued
you must not have disvalued
he must not have disvalued
we must not have disvalued
you must not have disvalued
they must not have disvalued	I must not have been disvaluing
you must not have been disvaluing
he must not have been disvaluing
we must not have been disvaluing
you must not have been disvaluing
they must not have been disvaluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disvalue?
must you disvalue?
must he disvalue?
must we disvalue?
must you disvalue?
must they disvalue? 	must I be disvaluing?
must you be disvaluing?
must he be disvaluing?
must we be disvaluing?
must you be disvaluing?
must they be disvaluing? 	must I have disvalued?
must you have disvalued?
must he have disvalued?
must we have disvalued?
must you have disvalued?
must they have disvalued? 	must I have been disvaluing?
must you have been disvaluing?
must he have been disvaluing?
must we have been disvaluing?
must you have been disvaluing?
must they have been disvaluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not disvalue?
must you not disvalue?
must he not disvalue?
must we not disvalue?
must you not disvalue?
must they not disvalue? 	must I not be disvaluing?
must you not be disvaluing?
must he not be disvaluing?
must we not be disvaluing?
must you not be disvaluing?
must they not be disvaluing? 	must I not have disvalued?
must you not have disvalued?
must he not have disvalued?
must we not have disvalued?
must you not have disvalued?
must they not have disvalued? 	must I not have been disvaluing?
must you not have been disvaluing?
must he not have been disvaluing?
must we not have been disvaluing?
must you not have been disvaluing?
must they not have been disvaluing?