must serenade
Regular verb: serenade - serenaded- serenaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must serenade
you must serenade
she must serenade
we must serenade
you must serenade
they must serenade 	I must be serenading
you must be serenading
she must be serenading
we must be serenading
you must be serenading
they must be serenading	I must have serenaded
you must have serenaded
she must have serenaded
we must have serenaded
you must have serenaded
they must have serenaded	I must have been serenading
you must have been serenading
she must have been serenading
we must have been serenading
you must have been serenading
they must have been serenading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't serenade
you mustn't serenade
she mustn't serenade
we mustn't serenade
you mustn't serenade
they mustn't serenade 	I mustn't be serenading
you mustn't be serenading
she mustn't be serenading
we mustn't be serenading
you mustn't be serenading
they mustn't be serenading	I mustn't have serenaded
you mustn't have serenaded
she mustn't have serenaded
we mustn't have serenaded
you mustn't have serenaded
they mustn't have serenaded	I mustn't have been serenading
you mustn't have been serenading
she mustn't have been serenading
we mustn't have been serenading
you mustn't have been serenading
they mustn't have been serenading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I serenade?
must you serenade?
must she serenade?
must we serenade?
must you serenade?
must they serenade? 	must I be serenading?
must you be serenading?
must she be serenading?
must we be serenading?
must you be serenading?
must they be serenading? 	must I have serenaded?
must you have serenaded?
must she have serenaded?
must we have serenaded?
must you have serenaded?
must they have serenaded? 	must I have been serenading?
must you have been serenading?
must she have been serenading?
must we have been serenading?
must you have been serenading?
must they have been serenading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I serenade?
mustn't you serenade?
mustn't she serenade?
mustn't we serenade?
mustn't you serenade?
mustn't they serenade? 	mustn't I be serenading?
mustn't you be serenading?
mustn't she be serenading?
mustn't we be serenading?
mustn't you be serenading?
mustn't they be serenading? 	mustn't I have serenaded?
mustn't you have serenaded?
mustn't she have serenaded?
mustn't we have serenaded?
mustn't you have serenaded?
mustn't they have serenaded? 	mustn't I have been serenading?
mustn't you have been serenading?
mustn't she have been serenading?
mustn't we have been serenading?
mustn't you have been serenading?
mustn't they have been serenading?