should spiff
Verbo regular: spiff - spiffed- spiffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should spiff
you should spiff
he should spiff
we should spiff
you should spiff
they should spiff 	I should be spiffing
you should be spiffing
he should be spiffing
we should be spiffing
you should be spiffing
they should be spiffing	I should have spiffed
you should have spiffed
he should have spiffed
we should have spiffed
you should have spiffed
they should have spiffed	I should have been spiffing
you should have been spiffing
he should have been spiffing
we should have been spiffing
you should have been spiffing
they should have been spiffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not spiff
you should not spiff
he should not spiff
we should not spiff
you should not spiff
they should not spiff 	I should not be spiffing
you should not be spiffing
he should not be spiffing
we should not be spiffing
you should not be spiffing
they should not be spiffing	I should not have spiffed
you should not have spiffed
he should not have spiffed
we should not have spiffed
you should not have spiffed
they should not have spiffed	I should not have been spiffing
you should not have been spiffing
he should not have been spiffing
we should not have been spiffing
you should not have been spiffing
they should not have been spiffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I spiff?
should you spiff?
should he spiff?
should we spiff?
should you spiff?
should they spiff? 	should I be spiffing?
should you be spiffing?
should he be spiffing?
should we be spiffing?
should you be spiffing?
should they be spiffing? 	should I have spiffed?
should you have spiffed?
should he have spiffed?
should we have spiffed?
should you have spiffed?
should they have spiffed? 	should I have been spiffing?
should you have been spiffing?
should he have been spiffing?
should we have been spiffing?
should you have been spiffing?
should they have been spiffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not spiff?
should you not spiff?
should he not spiff?
should we not spiff?
should you not spiff?
should they not spiff? 	should I not be spiffing?
should you not be spiffing?
should he not be spiffing?
should we not be spiffing?
should you not be spiffing?
should they not be spiffing? 	should I not have spiffed?
should you not have spiffed?
should he not have spiffed?
should we not have spiffed?
should you not have spiffed?
should they not have spiffed? 	should I not have been spiffing?
should you not have been spiffing?
should he not have been spiffing?
should we not have been spiffing?
should you not have been spiffing?
should they not have been spiffing?