could low
Verbo regular: low - lowed- lowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could low
you could low
he could low
we could low
you could low
they could low 	I could be lowing
you could be lowing
he could be lowing
we could be lowing
you could be lowing
they could be lowing	I could have lowed
you could have lowed
he could have lowed
we could have lowed
you could have lowed
they could have lowed	I could have been lowing
you could have been lowing
he could have been lowing
we could have been lowing
you could have been lowing
they could have been lowing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't low
you couldn't low
he couldn't low
we couldn't low
you couldn't low
they couldn't low 	I couldn't be lowing
you couldn't be lowing
he couldn't be lowing
we couldn't be lowing
you couldn't be lowing
they couldn't be lowing	I couldn't have lowed
you couldn't have lowed
he couldn't have lowed
we couldn't have lowed
you couldn't have lowed
they couldn't have lowed	I couldn't have been lowing
you couldn't have been lowing
he couldn't have been lowing
we couldn't have been lowing
you couldn't have been lowing
they couldn't have been lowing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I low?
could you low?
could he low?
could we low?
could you low?
could they low? 	could I be lowing?
could you be lowing?
could he be lowing?
could we be lowing?
could you be lowing?
could they be lowing? 	could I have lowed?
could you have lowed?
could he have lowed?
could we have lowed?
could you have lowed?
could they have lowed? 	could I have been lowing?
could you have been lowing?
could he have been lowing?
could we have been lowing?
could you have been lowing?
could they have been lowing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I low?
couldn't you low?
couldn't he low?
couldn't we low?
couldn't you low?
couldn't they low? 	couldn't I be lowing?
couldn't you be lowing?
couldn't he be lowing?
couldn't we be lowing?
couldn't you be lowing?
couldn't they be lowing? 	couldn't I have lowed?
couldn't you have lowed?
couldn't he have lowed?
couldn't we have lowed?
couldn't you have lowed?
couldn't they have lowed? 	couldn't I have been lowing?
couldn't you have been lowing?
couldn't he have been lowing?
couldn't we have been lowing?
couldn't you have been lowing?
couldn't they have been lowing?