could lowercase
Verbo regular: lowercase - lowercased- lowercased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could lowercase
you could lowercase
he could lowercase
we could lowercase
you could lowercase
they could lowercase 	I could be lowercasing
you could be lowercasing
he could be lowercasing
we could be lowercasing
you could be lowercasing
they could be lowercasing	I could have lowercased
you could have lowercased
he could have lowercased
we could have lowercased
you could have lowercased
they could have lowercased	I could have been lowercasing
you could have been lowercasing
he could have been lowercasing
we could have been lowercasing
you could have been lowercasing
they could have been lowercasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't lowercase
you couldn't lowercase
he couldn't lowercase
we couldn't lowercase
you couldn't lowercase
they couldn't lowercase 	I couldn't be lowercasing
you couldn't be lowercasing
he couldn't be lowercasing
we couldn't be lowercasing
you couldn't be lowercasing
they couldn't be lowercasing	I couldn't have lowercased
you couldn't have lowercased
he couldn't have lowercased
we couldn't have lowercased
you couldn't have lowercased
they couldn't have lowercased	I couldn't have been lowercasing
you couldn't have been lowercasing
he couldn't have been lowercasing
we couldn't have been lowercasing
you couldn't have been lowercasing
they couldn't have been lowercasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I lowercase?
could you lowercase?
could he lowercase?
could we lowercase?
could you lowercase?
could they lowercase? 	could I be lowercasing?
could you be lowercasing?
could he be lowercasing?
could we be lowercasing?
could you be lowercasing?
could they be lowercasing? 	could I have lowercased?
could you have lowercased?
could he have lowercased?
could we have lowercased?
could you have lowercased?
could they have lowercased? 	could I have been lowercasing?
could you have been lowercasing?
could he have been lowercasing?
could we have been lowercasing?
could you have been lowercasing?
could they have been lowercasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I lowercase?
couldn't you lowercase?
couldn't he lowercase?
couldn't we lowercase?
couldn't you lowercase?
couldn't they lowercase? 	couldn't I be lowercasing?
couldn't you be lowercasing?
couldn't he be lowercasing?
couldn't we be lowercasing?
couldn't you be lowercasing?
couldn't they be lowercasing? 	couldn't I have lowercased?
couldn't you have lowercased?
couldn't he have lowercased?
couldn't we have lowercased?
couldn't you have lowercased?
couldn't they have lowercased? 	couldn't I have been lowercasing?
couldn't you have been lowercasing?
couldn't he have been lowercasing?
couldn't we have been lowercasing?
couldn't you have been lowercasing?
couldn't they have been lowercasing?