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