could guess
Verbo regular: guess - guessed- guessed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could guess
you could guess
she could guess
we could guess
you could guess
they could guess 	I could be guessing
you could be guessing
she could be guessing
we could be guessing
you could be guessing
they could be guessing	I could have guessed
you could have guessed
she could have guessed
we could have guessed
you could have guessed
they could have guessed	I could have been guessing
you could have been guessing
she could have been guessing
we could have been guessing
you could have been guessing
they could have been guessing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't guess
you couldn't guess
she couldn't guess
we couldn't guess
you couldn't guess
they couldn't guess 	I couldn't be guessing
you couldn't be guessing
she couldn't be guessing
we couldn't be guessing
you couldn't be guessing
they couldn't be guessing	I couldn't have guessed
you couldn't have guessed
she couldn't have guessed
we couldn't have guessed
you couldn't have guessed
they couldn't have guessed	I couldn't have been guessing
you couldn't have been guessing
she couldn't have been guessing
we couldn't have been guessing
you couldn't have been guessing
they couldn't have been guessing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I guess?
could you guess?
could she guess?
could we guess?
could you guess?
could they guess? 	could I be guessing?
could you be guessing?
could she be guessing?
could we be guessing?
could you be guessing?
could they be guessing? 	could I have guessed?
could you have guessed?
could she have guessed?
could we have guessed?
could you have guessed?
could they have guessed? 	could I have been guessing?
could you have been guessing?
could she have been guessing?
could we have been guessing?
could you have been guessing?
could they have been guessing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I guess?
couldn't you guess?
couldn't she guess?
couldn't we guess?
couldn't you guess?
couldn't they guess? 	couldn't I be guessing?
couldn't you be guessing?
couldn't she be guessing?
couldn't we be guessing?
couldn't you be guessing?
couldn't they be guessing? 	couldn't I have guessed?
couldn't you have guessed?
couldn't she have guessed?
couldn't we have guessed?
couldn't you have guessed?
couldn't they have guessed? 	couldn't I have been guessing?
couldn't you have been guessing?
couldn't she have been guessing?
couldn't we have been guessing?
couldn't you have been guessing?
couldn't they have been guessing?