must herald
Regular verb: herald - heralded- heralded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must herald
you must herald
she must herald
we must herald
you must herald
they must herald 	I must be heralding
you must be heralding
she must be heralding
we must be heralding
you must be heralding
they must be heralding	I must have heralded
you must have heralded
she must have heralded
we must have heralded
you must have heralded
they must have heralded	I must have been heralding
you must have been heralding
she must have been heralding
we must have been heralding
you must have been heralding
they must have been heralding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't herald
you mustn't herald
she mustn't herald
we mustn't herald
you mustn't herald
they mustn't herald 	I mustn't be heralding
you mustn't be heralding
she mustn't be heralding
we mustn't be heralding
you mustn't be heralding
they mustn't be heralding	I mustn't have heralded
you mustn't have heralded
she mustn't have heralded
we mustn't have heralded
you mustn't have heralded
they mustn't have heralded	I mustn't have been heralding
you mustn't have been heralding
she mustn't have been heralding
we mustn't have been heralding
you mustn't have been heralding
they mustn't have been heralding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I herald?
must you herald?
must she herald?
must we herald?
must you herald?
must they herald? 	must I be heralding?
must you be heralding?
must she be heralding?
must we be heralding?
must you be heralding?
must they be heralding? 	must I have heralded?
must you have heralded?
must she have heralded?
must we have heralded?
must you have heralded?
must they have heralded? 	must I have been heralding?
must you have been heralding?
must she have been heralding?
must we have been heralding?
must you have been heralding?
must they have been heralding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I herald?
mustn't you herald?
mustn't she herald?
mustn't we herald?
mustn't you herald?
mustn't they herald? 	mustn't I be heralding?
mustn't you be heralding?
mustn't she be heralding?
mustn't we be heralding?
mustn't you be heralding?
mustn't they be heralding? 	mustn't I have heralded?
mustn't you have heralded?
mustn't she have heralded?
mustn't we have heralded?
mustn't you have heralded?
mustn't they have heralded? 	mustn't I have been heralding?
mustn't you have been heralding?
mustn't she have been heralding?
mustn't we have been heralding?
mustn't you have been heralding?
mustn't they have been heralding?