could outsing
Verbo irregular: outsing - outsang- outsung

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could outsing
you could outsing
he could outsing
we could outsing
you could outsing
they could outsing 	I could be outsinging
you could be outsinging
he could be outsinging
we could be outsinging
you could be outsinging
they could be outsinging	I could have outsung
you could have outsung
he could have outsung
we could have outsung
you could have outsung
they could have outsung	I could have been outsinging
you could have been outsinging
he could have been outsinging
we could have been outsinging
you could have been outsinging
they could have been outsinging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't outsing
you couldn't outsing
he couldn't outsing
we couldn't outsing
you couldn't outsing
they couldn't outsing 	I couldn't be outsinging
you couldn't be outsinging
he couldn't be outsinging
we couldn't be outsinging
you couldn't be outsinging
they couldn't be outsinging	I couldn't have outsung
you couldn't have outsung
he couldn't have outsung
we couldn't have outsung
you couldn't have outsung
they couldn't have outsung	I couldn't have been outsinging
you couldn't have been outsinging
he couldn't have been outsinging
we couldn't have been outsinging
you couldn't have been outsinging
they couldn't have been outsinging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I outsing?
could you outsing?
could he outsing?
could we outsing?
could you outsing?
could they outsing? 	could I be outsinging?
could you be outsinging?
could he be outsinging?
could we be outsinging?
could you be outsinging?
could they be outsinging? 	could I have outsung?
could you have outsung?
could he have outsung?
could we have outsung?
could you have outsung?
could they have outsung? 	could I have been outsinging?
could you have been outsinging?
could he have been outsinging?
could we have been outsinging?
could you have been outsinging?
could they have been outsinging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I outsing?
couldn't you outsing?
couldn't he outsing?
couldn't we outsing?
couldn't you outsing?
couldn't they outsing? 	couldn't I be outsinging?
couldn't you be outsinging?
couldn't he be outsinging?
couldn't we be outsinging?
couldn't you be outsinging?
couldn't they be outsinging? 	couldn't I have outsung?
couldn't you have outsung?
couldn't he have outsung?
couldn't we have outsung?
couldn't you have outsung?
couldn't they have outsung? 	couldn't I have been outsinging?
couldn't you have been outsinging?
couldn't he have been outsinging?
couldn't we have been outsinging?
couldn't you have been outsinging?
couldn't they have been outsinging?