I must reign you must reign she must reign we must reign you must reign they must reign
V-ing form
I must be reigning you must be reigning she must be reigning we must be reigning you must be reigning they must be reigning
Perfect
I must have reigned you must have reigned she must have reigned we must have reigned you must have reigned they must have reigned
V-ing perfect
I must have been reigning you must have been reigning she must have been reigning we must have been reigning you must have been reigning they must have been reigning
Negation
Simple form
I must not reign you must not reign she must not reign we must not reign you must not reign they must not reign
V-ing form
I must not be reigning you must not be reigning she must not be reigning we must not be reigning you must not be reigning they must not be reigning
Perfect
I must not have reigned you must not have reigned she must not have reigned we must not have reigned you must not have reigned they must not have reigned
V-ing perfect
I must not have been reigning you must not have been reigning she must not have been reigning we must not have been reigning you must not have been reigning they must not have been reigning
Interrogative form
Simple form
must I reign? must you reign? must she reign? must we reign? must you reign? must they reign?
V-ing form
must I be reigning? must you be reigning? must she be reigning? must we be reigning? must you be reigning? must they be reigning?
Perfect
must I have reigned? must you have reigned? must she have reigned? must we have reigned? must you have reigned? must they have reigned?
V-ing perfect
must I have been reigning? must you have been reigning? must she have been reigning? must we have been reigning? must you have been reigning? must they have been reigning?
Interro-negative form
Simple form
must I not reign? must you not reign? must she not reign? must we not reign? must you not reign? must they not reign?
V-ing form
must I not be reigning? must you not be reigning? must she not be reigning? must we not be reigning? must you not be reigning? must they not be reigning?
Perfect
must I not have reigned? must you not have reigned? must she not have reigned? must we not have reigned? must you not have reigned? must they not have reigned?
V-ing perfect
must I not have been reigning? must you not have been reigning? must she not have been reigning? must we not have been reigning? must you not have been reigning? must they not have been reigning?