English verb conjugation
MUST APPEAR

Regular verb: appear - appeared - appeared

Affirmation

Simple form	V-ing form
I must appear you must appear she must appear we must appear you must appear they must appear	I must be appearing you must be appearing she must be appearing we must be appearing you must be appearing they must be appearing
Perfect	V-ing perfect
I must have appeared you must have appeared she must have appeared we must have appeared you must have appeared they must have appeared	I must have been appearing you must have been appearing she must have been appearing we must have been appearing you must have been appearing they must have been appearing

Negation

Simple form	V-ing form
I mustn't appear you mustn't appear she mustn't appear we mustn't appear you mustn't appear they mustn't appear	I mustn't be appearing you mustn't be appearing she mustn't be appearing we mustn't be appearing you mustn't be appearing they mustn't be appearing
Perfect	V-ing perfect
I mustn't have appeared you mustn't have appeared she mustn't have appeared we mustn't have appeared you mustn't have appeared they mustn't have appeared	I mustn't have been appearing you mustn't have been appearing she mustn't have been appearing we mustn't have been appearing you mustn't have been appearing they mustn't have been appearing

Interrogative form

Simple form	V-ing form
must I appear? must you appear? must she appear? must we appear? must you appear? must they appear?	must I be appearing? must you be appearing? must she be appearing? must we be appearing? must you be appearing? must they be appearing?
Perfect	V-ing perfect
must I have appeared? must you have appeared? must she have appeared? must we have appeared? must you have appeared? must they have appeared?	must I have been appearing? must you have been appearing? must she have been appearing? must we have been appearing? must you have been appearing? must they have been appearing?

Interro-negative form

Simple form	V-ing form
mustn't I appear? mustn't you appear? mustn't she appear? mustn't we appear? mustn't you appear? mustn't they appear?	mustn't I be appearing? mustn't you be appearing? mustn't she be appearing? mustn't we be appearing? mustn't you be appearing? mustn't they be appearing?
Perfect	V-ing perfect
mustn't I have appeared? mustn't you have appeared? mustn't she have appeared? mustn't we have appeared? mustn't you have appeared? mustn't they have appeared?	mustn't I have been appearing? mustn't you have been appearing? mustn't she have been appearing? mustn't we have been appearing? mustn't you have been appearing? mustn't they have been appearing?