must perseverate
Verbe régulier : perseverate - perseverated- perseverated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must perseverate
you must perseverate
he must perseverate
we must perseverate
you must perseverate
they must perseverate 	I must be perseverating
you must be perseverating
he must be perseverating
we must be perseverating
you must be perseverating
they must be perseverating	I must have perseverated
you must have perseverated
he must have perseverated
we must have perseverated
you must have perseverated
they must have perseverated	I must have been perseverating
you must have been perseverating
he must have been perseverating
we must have been perseverating
you must have been perseverating
they must have been perseverating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't perseverate
you mustn't perseverate
he mustn't perseverate
we mustn't perseverate
you mustn't perseverate
they mustn't perseverate 	I mustn't be perseverating
you mustn't be perseverating
he mustn't be perseverating
we mustn't be perseverating
you mustn't be perseverating
they mustn't be perseverating	I mustn't have perseverated
you mustn't have perseverated
he mustn't have perseverated
we mustn't have perseverated
you mustn't have perseverated
they mustn't have perseverated	I mustn't have been perseverating
you mustn't have been perseverating
he mustn't have been perseverating
we mustn't have been perseverating
you mustn't have been perseverating
they mustn't have been perseverating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I perseverate?
must you perseverate?
must he perseverate?
must we perseverate?
must you perseverate?
must they perseverate? 	must I be perseverating?
must you be perseverating?
must he be perseverating?
must we be perseverating?
must you be perseverating?
must they be perseverating? 	must I have perseverated?
must you have perseverated?
must he have perseverated?
must we have perseverated?
must you have perseverated?
must they have perseverated? 	must I have been perseverating?
must you have been perseverating?
must he have been perseverating?
must we have been perseverating?
must you have been perseverating?
must they have been perseverating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I perseverate?
mustn't you perseverate?
mustn't he perseverate?
mustn't we perseverate?
mustn't you perseverate?
mustn't they perseverate? 	mustn't I be perseverating?
mustn't you be perseverating?
mustn't he be perseverating?
mustn't we be perseverating?
mustn't you be perseverating?
mustn't they be perseverating? 	mustn't I have perseverated?
mustn't you have perseverated?
mustn't he have perseverated?
mustn't we have perseverated?
mustn't you have perseverated?
mustn't they have perseverated? 	mustn't I have been perseverating?
mustn't you have been perseverating?
mustn't he have been perseverating?
mustn't we have been perseverating?
mustn't you have been perseverating?
mustn't they have been perseverating?