must reverberate
Regular verb: reverberate - reverberated- reverberated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must reverberate
you must reverberate
she must reverberate
we must reverberate
you must reverberate
they must reverberate 	I must be reverberating
you must be reverberating
she must be reverberating
we must be reverberating
you must be reverberating
they must be reverberating	I must have reverberated
you must have reverberated
she must have reverberated
we must have reverberated
you must have reverberated
they must have reverberated	I must have been reverberating
you must have been reverberating
she must have been reverberating
we must have been reverberating
you must have been reverberating
they must have been reverberating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't reverberate
you mustn't reverberate
she mustn't reverberate
we mustn't reverberate
you mustn't reverberate
they mustn't reverberate 	I mustn't be reverberating
you mustn't be reverberating
she mustn't be reverberating
we mustn't be reverberating
you mustn't be reverberating
they mustn't be reverberating	I mustn't have reverberated
you mustn't have reverberated
she mustn't have reverberated
we mustn't have reverberated
you mustn't have reverberated
they mustn't have reverberated	I mustn't have been reverberating
you mustn't have been reverberating
she mustn't have been reverberating
we mustn't have been reverberating
you mustn't have been reverberating
they mustn't have been reverberating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I reverberate?
must you reverberate?
must she reverberate?
must we reverberate?
must you reverberate?
must they reverberate? 	must I be reverberating?
must you be reverberating?
must she be reverberating?
must we be reverberating?
must you be reverberating?
must they be reverberating? 	must I have reverberated?
must you have reverberated?
must she have reverberated?
must we have reverberated?
must you have reverberated?
must they have reverberated? 	must I have been reverberating?
must you have been reverberating?
must she have been reverberating?
must we have been reverberating?
must you have been reverberating?
must they have been reverberating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I reverberate?
mustn't you reverberate?
mustn't she reverberate?
mustn't we reverberate?
mustn't you reverberate?
mustn't they reverberate? 	mustn't I be reverberating?
mustn't you be reverberating?
mustn't she be reverberating?
mustn't we be reverberating?
mustn't you be reverberating?
mustn't they be reverberating? 	mustn't I have reverberated?
mustn't you have reverberated?
mustn't she have reverberated?
mustn't we have reverberated?
mustn't you have reverberated?
mustn't they have reverberated? 	mustn't I have been reverberating?
mustn't you have been reverberating?
mustn't she have been reverberating?
mustn't we have been reverberating?
mustn't you have been reverberating?
mustn't they have been reverberating?