should dun
Verbo regular: dun - dunned- dunned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should dun
you should dun
he should dun
we should dun
you should dun
they should dun 	I should be dunning
you should be dunning
he should be dunning
we should be dunning
you should be dunning
they should be dunning	I should have dunned
you should have dunned
he should have dunned
we should have dunned
you should have dunned
they should have dunned	I should have been dunning
you should have been dunning
he should have been dunning
we should have been dunning
you should have been dunning
they should have been dunning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not dun
you should not dun
he should not dun
we should not dun
you should not dun
they should not dun 	I should not be dunning
you should not be dunning
he should not be dunning
we should not be dunning
you should not be dunning
they should not be dunning	I should not have dunned
you should not have dunned
he should not have dunned
we should not have dunned
you should not have dunned
they should not have dunned	I should not have been dunning
you should not have been dunning
he should not have been dunning
we should not have been dunning
you should not have been dunning
they should not have been dunning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I dun?
should you dun?
should he dun?
should we dun?
should you dun?
should they dun? 	should I be dunning?
should you be dunning?
should he be dunning?
should we be dunning?
should you be dunning?
should they be dunning? 	should I have dunned?
should you have dunned?
should he have dunned?
should we have dunned?
should you have dunned?
should they have dunned? 	should I have been dunning?
should you have been dunning?
should he have been dunning?
should we have been dunning?
should you have been dunning?
should they have been dunning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not dun?
should you not dun?
should he not dun?
should we not dun?
should you not dun?
should they not dun? 	should I not be dunning?
should you not be dunning?
should he not be dunning?
should we not be dunning?
should you not be dunning?
should they not be dunning? 	should I not have dunned?
should you not have dunned?
should he not have dunned?
should we not have dunned?
should you not have dunned?
should they not have dunned? 	should I not have been dunning?
should you not have been dunning?
should he not have been dunning?
should we not have been dunning?
should you not have been dunning?
should they not have been dunning?