should fife
Verbo regular: fife - fifed- fifed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should fife
you should fife
he should fife
we should fife
you should fife
they should fife 	I should be fifing
you should be fifing
he should be fifing
we should be fifing
you should be fifing
they should be fifing	I should have fifed
you should have fifed
he should have fifed
we should have fifed
you should have fifed
they should have fifed	I should have been fifing
you should have been fifing
he should have been fifing
we should have been fifing
you should have been fifing
they should have been fifing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not fife
you should not fife
he should not fife
we should not fife
you should not fife
they should not fife 	I should not be fifing
you should not be fifing
he should not be fifing
we should not be fifing
you should not be fifing
they should not be fifing	I should not have fifed
you should not have fifed
he should not have fifed
we should not have fifed
you should not have fifed
they should not have fifed	I should not have been fifing
you should not have been fifing
he should not have been fifing
we should not have been fifing
you should not have been fifing
they should not have been fifing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I fife?
should you fife?
should he fife?
should we fife?
should you fife?
should they fife? 	should I be fifing?
should you be fifing?
should he be fifing?
should we be fifing?
should you be fifing?
should they be fifing? 	should I have fifed?
should you have fifed?
should he have fifed?
should we have fifed?
should you have fifed?
should they have fifed? 	should I have been fifing?
should you have been fifing?
should he have been fifing?
should we have been fifing?
should you have been fifing?
should they have been fifing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not fife?
should you not fife?
should he not fife?
should we not fife?
should you not fife?
should they not fife? 	should I not be fifing?
should you not be fifing?
should he not be fifing?
should we not be fifing?
should you not be fifing?
should they not be fifing? 	should I not have fifed?
should you not have fifed?
should he not have fifed?
should we not have fifed?
should you not have fifed?
should they not have fifed? 	should I not have been fifing?
should you not have been fifing?
should he not have been fifing?
should we not have been fifing?
should you not have been fifing?
should they not have been fifing?