must outsing
Verbo irregular: outsing - outsang- outsung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must outsing
you must outsing
he must outsing
we must outsing
you must outsing
they must outsing 	I must be outsinging
you must be outsinging
he must be outsinging
we must be outsinging
you must be outsinging
they must be outsinging	I must have outsung
you must have outsung
he must have outsung
we must have outsung
you must have outsung
they must have outsung	I must have been outsinging
you must have been outsinging
he must have been outsinging
we must have been outsinging
you must have been outsinging
they must have been outsinging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not outsing
you must not outsing
he must not outsing
we must not outsing
you must not outsing
they must not outsing 	I must not be outsinging
you must not be outsinging
he must not be outsinging
we must not be outsinging
you must not be outsinging
they must not be outsinging	I must not have outsung
you must not have outsung
he must not have outsung
we must not have outsung
you must not have outsung
they must not have outsung	I must not have been outsinging
you must not have been outsinging
he must not have been outsinging
we must not have been outsinging
you must not have been outsinging
they must not have been outsinging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I outsing?
must you outsing?
must he outsing?
must we outsing?
must you outsing?
must they outsing? 	must I be outsinging?
must you be outsinging?
must he be outsinging?
must we be outsinging?
must you be outsinging?
must they be outsinging? 	must I have outsung?
must you have outsung?
must he have outsung?
must we have outsung?
must you have outsung?
must they have outsung? 	must I have been outsinging?
must you have been outsinging?
must he have been outsinging?
must we have been outsinging?
must you have been outsinging?
must they have been outsinging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not outsing?
must you not outsing?
must he not outsing?
must we not outsing?
must you not outsing?
must they not outsing? 	must I not be outsinging?
must you not be outsinging?
must he not be outsinging?
must we not be outsinging?
must you not be outsinging?
must they not be outsinging? 	must I not have outsung?
must you not have outsung?
must he not have outsung?
must we not have outsung?
must you not have outsung?
must they not have outsung? 	must I not have been outsinging?
must you not have been outsinging?
must he not have been outsinging?
must we not have been outsinging?
must you not have been outsinging?
must they not have been outsinging?