could lose
Verbo irregular: lose - lost- lost

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could lose
you could lose
she could lose
we could lose
you could lose
they could lose 	I could be losing
you could be losing
she could be losing
we could be losing
you could be losing
they could be losing	I could have lost
you could have lost
she could have lost
we could have lost
you could have lost
they could have lost	I could have been losing
you could have been losing
she could have been losing
we could have been losing
you could have been losing
they could have been losing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't lose
you couldn't lose
she couldn't lose
we couldn't lose
you couldn't lose
they couldn't lose 	I couldn't be losing
you couldn't be losing
she couldn't be losing
we couldn't be losing
you couldn't be losing
they couldn't be losing	I couldn't have lost
you couldn't have lost
she couldn't have lost
we couldn't have lost
you couldn't have lost
they couldn't have lost	I couldn't have been losing
you couldn't have been losing
she couldn't have been losing
we couldn't have been losing
you couldn't have been losing
they couldn't have been losing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I lose?
could you lose?
could she lose?
could we lose?
could you lose?
could they lose? 	could I be losing?
could you be losing?
could she be losing?
could we be losing?
could you be losing?
could they be losing? 	could I have lost?
could you have lost?
could she have lost?
could we have lost?
could you have lost?
could they have lost? 	could I have been losing?
could you have been losing?
could she have been losing?
could we have been losing?
could you have been losing?
could they have been losing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I lose?
couldn't you lose?
couldn't she lose?
couldn't we lose?
couldn't you lose?
couldn't they lose? 	couldn't I be losing?
couldn't you be losing?
couldn't she be losing?
couldn't we be losing?
couldn't you be losing?
couldn't they be losing? 	couldn't I have lost?
couldn't you have lost?
couldn't she have lost?
couldn't we have lost?
couldn't you have lost?
couldn't they have lost? 	couldn't I have been losing?
couldn't you have been losing?
couldn't she have been losing?
couldn't we have been losing?
couldn't you have been losing?
couldn't they have been losing?