must prang
Verbo regular: prang - pranged- pranged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must prang
you must prang
he must prang
we must prang
you must prang
they must prang 	I must be pranging
you must be pranging
he must be pranging
we must be pranging
you must be pranging
they must be pranging	I must have pranged
you must have pranged
he must have pranged
we must have pranged
you must have pranged
they must have pranged	I must have been pranging
you must have been pranging
he must have been pranging
we must have been pranging
you must have been pranging
they must have been pranging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't prang
you mustn't prang
he mustn't prang
we mustn't prang
you mustn't prang
they mustn't prang 	I mustn't be pranging
you mustn't be pranging
he mustn't be pranging
we mustn't be pranging
you mustn't be pranging
they mustn't be pranging	I mustn't have pranged
you mustn't have pranged
he mustn't have pranged
we mustn't have pranged
you mustn't have pranged
they mustn't have pranged	I mustn't have been pranging
you mustn't have been pranging
he mustn't have been pranging
we mustn't have been pranging
you mustn't have been pranging
they mustn't have been pranging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I prang?
must you prang?
must he prang?
must we prang?
must you prang?
must they prang? 	must I be pranging?
must you be pranging?
must he be pranging?
must we be pranging?
must you be pranging?
must they be pranging? 	must I have pranged?
must you have pranged?
must he have pranged?
must we have pranged?
must you have pranged?
must they have pranged? 	must I have been pranging?
must you have been pranging?
must he have been pranging?
must we have been pranging?
must you have been pranging?
must they have been pranging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I prang?
mustn't you prang?
mustn't he prang?
mustn't we prang?
mustn't you prang?
mustn't they prang? 	mustn't I be pranging?
mustn't you be pranging?
mustn't he be pranging?
mustn't we be pranging?
mustn't you be pranging?
mustn't they be pranging? 	mustn't I have pranged?
mustn't you have pranged?
mustn't he have pranged?
mustn't we have pranged?
mustn't you have pranged?
mustn't they have pranged? 	mustn't I have been pranging?
mustn't you have been pranging?
mustn't he have been pranging?
mustn't we have been pranging?
mustn't you have been pranging?
mustn't they have been pranging?