should bitter
Verbo regular: bitter - bittered- bittered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should bitter
you should bitter
he should bitter
we should bitter
you should bitter
they should bitter 	I should be bittering
you should be bittering
he should be bittering
we should be bittering
you should be bittering
they should be bittering	I should have bittered
you should have bittered
he should have bittered
we should have bittered
you should have bittered
they should have bittered	I should have been bittering
you should have been bittering
he should have been bittering
we should have been bittering
you should have been bittering
they should have been bittering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not bitter
you should not bitter
he should not bitter
we should not bitter
you should not bitter
they should not bitter 	I should not be bittering
you should not be bittering
he should not be bittering
we should not be bittering
you should not be bittering
they should not be bittering	I should not have bittered
you should not have bittered
he should not have bittered
we should not have bittered
you should not have bittered
they should not have bittered	I should not have been bittering
you should not have been bittering
he should not have been bittering
we should not have been bittering
you should not have been bittering
they should not have been bittering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I bitter?
should you bitter?
should he bitter?
should we bitter?
should you bitter?
should they bitter? 	should I be bittering?
should you be bittering?
should he be bittering?
should we be bittering?
should you be bittering?
should they be bittering? 	should I have bittered?
should you have bittered?
should he have bittered?
should we have bittered?
should you have bittered?
should they have bittered? 	should I have been bittering?
should you have been bittering?
should he have been bittering?
should we have been bittering?
should you have been bittering?
should they have been bittering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not bitter?
should you not bitter?
should he not bitter?
should we not bitter?
should you not bitter?
should they not bitter? 	should I not be bittering?
should you not be bittering?
should he not be bittering?
should we not be bittering?
should you not be bittering?
should they not be bittering? 	should I not have bittered?
should you not have bittered?
should he not have bittered?
should we not have bittered?
should you not have bittered?
should they not have bittered? 	should I not have been bittering?
should you not have been bittering?
should he not have been bittering?
should we not have been bittering?
should you not have been bittering?
should they not have been bittering?