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 must not appear you must not appear she must not appear we must not appear you must not appear they must not appear	I must not be appearing you must not be appearing she must not be appearing we must not be appearing you must not be appearing they must not be appearing
Perfect	V-ing perfect
I must not have appeared you must not have appeared she must not have appeared we must not have appeared you must not have appeared they must not have appeared	I must not have been appearing you must not have been appearing she must not have been appearing we must not have been appearing you must not have been appearing they must not 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
must I not appear? must you not appear? must she not appear? must we not appear? must you not appear? must they not appear?	must I not be appearing? must you not be appearing? must she not be appearing? must we not be appearing? must you not be appearing? must they not be appearing?
Perfect	V-ing perfect
must I not have appeared? must you not have appeared? must she not have appeared? must we not have appeared? must you not have appeared? must they not have appeared?	must I not have been appearing? must you not have been appearing? must she not have been appearing? must we not have been appearing? must you not have been appearing? must they not have been appearing?