must appear
Regular verb: appear - appeared- appeared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?