I must meliorate you must meliorate she must meliorate we must meliorate you must meliorate they must meliorate
V-ing form
I must be meliorating you must be meliorating she must be meliorating we must be meliorating you must be meliorating they must be meliorating
Perfect
I must have meliorated you must have meliorated she must have meliorated we must have meliorated you must have meliorated they must have meliorated
V-ing perfect
I must have been meliorating you must have been meliorating she must have been meliorating we must have been meliorating you must have been meliorating they must have been meliorating
Negation
Simple form
I must not meliorate you must not meliorate she must not meliorate we must not meliorate you must not meliorate they must not meliorate
V-ing form
I must not be meliorating you must not be meliorating she must not be meliorating we must not be meliorating you must not be meliorating they must not be meliorating
Perfect
I must not have meliorated you must not have meliorated she must not have meliorated we must not have meliorated you must not have meliorated they must not have meliorated
V-ing perfect
I must not have been meliorating you must not have been meliorating she must not have been meliorating we must not have been meliorating you must not have been meliorating they must not have been meliorating
Interrogative form
Simple form
must I meliorate? must you meliorate? must she meliorate? must we meliorate? must you meliorate? must they meliorate?
V-ing form
must I be meliorating? must you be meliorating? must she be meliorating? must we be meliorating? must you be meliorating? must they be meliorating?
Perfect
must I have meliorated? must you have meliorated? must she have meliorated? must we have meliorated? must you have meliorated? must they have meliorated?
V-ing perfect
must I have been meliorating? must you have been meliorating? must she have been meliorating? must we have been meliorating? must you have been meliorating? must they have been meliorating?
Interro-negative form
Simple form
must I not meliorate? must you not meliorate? must she not meliorate? must we not meliorate? must you not meliorate? must they not meliorate?
V-ing form
must I not be meliorating? must you not be meliorating? must she not be meliorating? must we not be meliorating? must you not be meliorating? must they not be meliorating?
Perfect
must I not have meliorated? must you not have meliorated? must she not have meliorated? must we not have meliorated? must you not have meliorated? must they not have meliorated?
V-ing perfect
must I not have been meliorating? must you not have been meliorating? must she not have been meliorating? must we not have been meliorating? must you not have been meliorating? must they not have been meliorating?