I must appear you must appear he must appear we must appear you must appear they must appear
V-ing form
I must be appearing you must be appearing he must be appearing we must be appearing you must be appearing they must be appearing
Perfect
I must have appeared you must have appeared he must have appeared we must have appeared you must have appeared they must have appeared
V-ing perfect
I must have been appearing you must have been appearing he must have been appearing we must have been appearing you must have been appearing they must have been appearing
Negation
Simple form
I must not appear you must not appear he must not appear we must not appear you must not appear they must not appear
V-ing form
I must not be appearing you must not be appearing he must not be appearing we must not be appearing you must not be appearing they must not be appearing
Perfect
I must not have appeared you must not have appeared he must not have appeared we must not have appeared you must not have appeared they must not have appeared
V-ing perfect
I must not have been appearing you must not have been appearing he 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
must I appear? must you appear? must he appear? must we appear? must you appear? must they appear?
V-ing form
must I be appearing? must you be appearing? must he be appearing? must we be appearing? must you be appearing? must they be appearing?
Perfect
must I have appeared? must you have appeared? must he have appeared? must we have appeared? must you have appeared? must they have appeared?
V-ing perfect
must I have been appearing? must you have been appearing? must he have been appearing? must we have been appearing? must you have been appearing? must they have been appearing?
Interro-negative form
Simple form
must I not appear? must you not appear? must he not appear? must we not appear? must you not appear? must they not appear?
V-ing form
must I not be appearing? must you not be appearing? must he not be appearing? must we not be appearing? must you not be appearing? must they not be appearing?
Perfect
must I not have appeared? must you not have appeared? must he not have appeared? must we not have appeared? must you not have appeared? must they not have appeared?
V-ing perfect
must I not have been appearing? must you not have been appearing? must he not have been appearing? must we not have been appearing? must you not have been appearing? must they not have been appearing?