must outring
Verbo irregular: outring - outrang- outrung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must outring
you must outring
he must outring
we must outring
you must outring
they must outring 	I must be outringing
you must be outringing
he must be outringing
we must be outringing
you must be outringing
they must be outringing	I must have outrung
you must have outrung
he must have outrung
we must have outrung
you must have outrung
they must have outrung	I must have been outringing
you must have been outringing
he must have been outringing
we must have been outringing
you must have been outringing
they must have been outringing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't outring
you mustn't outring
he mustn't outring
we mustn't outring
you mustn't outring
they mustn't outring 	I mustn't be outringing
you mustn't be outringing
he mustn't be outringing
we mustn't be outringing
you mustn't be outringing
they mustn't be outringing	I mustn't have outrung
you mustn't have outrung
he mustn't have outrung
we mustn't have outrung
you mustn't have outrung
they mustn't have outrung	I mustn't have been outringing
you mustn't have been outringing
he mustn't have been outringing
we mustn't have been outringing
you mustn't have been outringing
they mustn't have been outringing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I outring?
must you outring?
must he outring?
must we outring?
must you outring?
must they outring? 	must I be outringing?
must you be outringing?
must he be outringing?
must we be outringing?
must you be outringing?
must they be outringing? 	must I have outrung?
must you have outrung?
must he have outrung?
must we have outrung?
must you have outrung?
must they have outrung? 	must I have been outringing?
must you have been outringing?
must he have been outringing?
must we have been outringing?
must you have been outringing?
must they have been outringing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I outring?
mustn't you outring?
mustn't he outring?
mustn't we outring?
mustn't you outring?
mustn't they outring? 	mustn't I be outringing?
mustn't you be outringing?
mustn't he be outringing?
mustn't we be outringing?
mustn't you be outringing?
mustn't they be outringing? 	mustn't I have outrung?
mustn't you have outrung?
mustn't he have outrung?
mustn't we have outrung?
mustn't you have outrung?
mustn't they have outrung? 	mustn't I have been outringing?
mustn't you have been outringing?
mustn't he have been outringing?
mustn't we have been outringing?
mustn't you have been outringing?
mustn't they have been outringing?