could loop
Verbo regular: loop - looped- looped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could loop
you could loop
she could loop
we could loop
you could loop
they could loop 	I could be looping
you could be looping
she could be looping
we could be looping
you could be looping
they could be looping	I could have looped
you could have looped
she could have looped
we could have looped
you could have looped
they could have looped	I could have been looping
you could have been looping
she could have been looping
we could have been looping
you could have been looping
they could have been looping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't loop
you couldn't loop
she couldn't loop
we couldn't loop
you couldn't loop
they couldn't loop 	I couldn't be looping
you couldn't be looping
she couldn't be looping
we couldn't be looping
you couldn't be looping
they couldn't be looping	I couldn't have looped
you couldn't have looped
she couldn't have looped
we couldn't have looped
you couldn't have looped
they couldn't have looped	I couldn't have been looping
you couldn't have been looping
she couldn't have been looping
we couldn't have been looping
you couldn't have been looping
they couldn't have been looping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I loop?
could you loop?
could she loop?
could we loop?
could you loop?
could they loop? 	could I be looping?
could you be looping?
could she be looping?
could we be looping?
could you be looping?
could they be looping? 	could I have looped?
could you have looped?
could she have looped?
could we have looped?
could you have looped?
could they have looped? 	could I have been looping?
could you have been looping?
could she have been looping?
could we have been looping?
could you have been looping?
could they have been looping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I loop?
couldn't you loop?
couldn't she loop?
couldn't we loop?
couldn't you loop?
couldn't they loop? 	couldn't I be looping?
couldn't you be looping?
couldn't she be looping?
couldn't we be looping?
couldn't you be looping?
couldn't they be looping? 	couldn't I have looped?
couldn't you have looped?
couldn't she have looped?
couldn't we have looped?
couldn't you have looped?
couldn't they have looped? 	couldn't I have been looping?
couldn't you have been looping?
couldn't she have been looping?
couldn't we have been looping?
couldn't you have been looping?
couldn't they have been looping?