must prevalue
Regular verb: prevalue - prevalued- prevalued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prevalue
you must prevalue
she must prevalue
we must prevalue
you must prevalue
they must prevalue 	I must be prevaluing
you must be prevaluing
she must be prevaluing
we must be prevaluing
you must be prevaluing
they must be prevaluing	I must have prevalued
you must have prevalued
she must have prevalued
we must have prevalued
you must have prevalued
they must have prevalued	I must have been prevaluing
you must have been prevaluing
she must have been prevaluing
we must have been prevaluing
you must have been prevaluing
they must have been prevaluing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not prevalue
you must not prevalue
she must not prevalue
we must not prevalue
you must not prevalue
they must not prevalue 	I must not be prevaluing
you must not be prevaluing
she must not be prevaluing
we must not be prevaluing
you must not be prevaluing
they must not be prevaluing	I must not have prevalued
you must not have prevalued
she must not have prevalued
we must not have prevalued
you must not have prevalued
they must not have prevalued	I must not have been prevaluing
you must not have been prevaluing
she must not have been prevaluing
we must not have been prevaluing
you must not have been prevaluing
they must not have been prevaluing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prevalue?
must you prevalue?
must she prevalue?
must we prevalue?
must you prevalue?
must they prevalue? 	must I be prevaluing?
must you be prevaluing?
must she be prevaluing?
must we be prevaluing?
must you be prevaluing?
must they be prevaluing? 	must I have prevalued?
must you have prevalued?
must she have prevalued?
must we have prevalued?
must you have prevalued?
must they have prevalued? 	must I have been prevaluing?
must you have been prevaluing?
must she have been prevaluing?
must we have been prevaluing?
must you have been prevaluing?
must they have been prevaluing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not prevalue?
must you not prevalue?
must she not prevalue?
must we not prevalue?
must you not prevalue?
must they not prevalue? 	must I not be prevaluing?
must you not be prevaluing?
must she not be prevaluing?
must we not be prevaluing?
must you not be prevaluing?
must they not be prevaluing? 	must I not have prevalued?
must you not have prevalued?
must she not have prevalued?
must we not have prevalued?
must you not have prevalued?
must they not have prevalued? 	must I not have been prevaluing?
must you not have been prevaluing?
must she not have been prevaluing?
must we not have been prevaluing?
must you not have been prevaluing?
must they not have been prevaluing?