should spar
Verbo regular: spar - sparred- sparred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd spar
you'd spar
he'd spar
we'd spar
you'd spar
they'd spar 	I'd be sparring
you'd be sparring
he'd be sparring
we'd be sparring
you'd be sparring
they'd be sparring	I should've sparred
you should've sparred
he should've sparred
we should've sparred
you should've sparred
they should've sparred	I should've been sparring
you should've been sparring
he should've been sparring
we should've been sparring
you should've been sparring
they should've been sparring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't spar
you shouldn't spar
he shouldn't spar
we shouldn't spar
you shouldn't spar
they shouldn't spar 	I shouldn't be sparring
you shouldn't be sparring
he shouldn't be sparring
we shouldn't be sparring
you shouldn't be sparring
they shouldn't be sparring	I shouldn't have sparred
you shouldn't have sparred
he shouldn't have sparred
we shouldn't have sparred
you shouldn't have sparred
they shouldn't have sparred	I shouldn't have been sparring
you shouldn't have been sparring
he shouldn't have been sparring
we shouldn't have been sparring
you shouldn't have been sparring
they shouldn't have been sparring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I spar?
should you spar?
should he spar?
should we spar?
should you spar?
should they spar? 	should I be sparring?
should you be sparring?
should he be sparring?
should we be sparring?
should you be sparring?
should they be sparring? 	should I have sparred?
should you have sparred?
should he have sparred?
should we have sparred?
should you have sparred?
should they have sparred? 	should I have been sparring?
should you have been sparring?
should he have been sparring?
should we have been sparring?
should you have been sparring?
should they have been sparring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I spar?
shouldn't you spar?
shouldn't he spar?
shouldn't we spar?
shouldn't you spar?
shouldn't they spar? 	shouldn't I be sparring?
shouldn't you be sparring?
shouldn't he be sparring?
shouldn't we be sparring?
shouldn't you be sparring?
shouldn't they be sparring? 	shouldn't I have sparred?
shouldn't you have sparred?
shouldn't he have sparred?
shouldn't we have sparred?
shouldn't you have sparred?
shouldn't they have sparred? 	shouldn't I have been sparring?
shouldn't you have been sparring?
shouldn't he have been sparring?
shouldn't we have been sparring?
shouldn't you have been sparring?
shouldn't they have been sparring?