should unbutton
Verbo regular: unbutton - unbuttoned- unbuttoned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd unbutton
you'd unbutton
he'd unbutton
we'd unbutton
you'd unbutton
they'd unbutton 	I'd be unbuttoning
you'd be unbuttoning
he'd be unbuttoning
we'd be unbuttoning
you'd be unbuttoning
they'd be unbuttoning	I should've unbuttoned
you should've unbuttoned
he should've unbuttoned
we should've unbuttoned
you should've unbuttoned
they should've unbuttoned	I should've been unbuttoning
you should've been unbuttoning
he should've been unbuttoning
we should've been unbuttoning
you should've been unbuttoning
they should've been unbuttoning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't unbutton
you shouldn't unbutton
he shouldn't unbutton
we shouldn't unbutton
you shouldn't unbutton
they shouldn't unbutton 	I shouldn't be unbuttoning
you shouldn't be unbuttoning
he shouldn't be unbuttoning
we shouldn't be unbuttoning
you shouldn't be unbuttoning
they shouldn't be unbuttoning	I shouldn't have unbuttoned
you shouldn't have unbuttoned
he shouldn't have unbuttoned
we shouldn't have unbuttoned
you shouldn't have unbuttoned
they shouldn't have unbuttoned	I shouldn't have been unbuttoning
you shouldn't have been unbuttoning
he shouldn't have been unbuttoning
we shouldn't have been unbuttoning
you shouldn't have been unbuttoning
they shouldn't have been unbuttoning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I unbutton?
should you unbutton?
should he unbutton?
should we unbutton?
should you unbutton?
should they unbutton? 	should I be unbuttoning?
should you be unbuttoning?
should he be unbuttoning?
should we be unbuttoning?
should you be unbuttoning?
should they be unbuttoning? 	should I have unbuttoned?
should you have unbuttoned?
should he have unbuttoned?
should we have unbuttoned?
should you have unbuttoned?
should they have unbuttoned? 	should I have been unbuttoning?
should you have been unbuttoning?
should he have been unbuttoning?
should we have been unbuttoning?
should you have been unbuttoning?
should they have been unbuttoning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I unbutton?
shouldn't you unbutton?
shouldn't he unbutton?
shouldn't we unbutton?
shouldn't you unbutton?
shouldn't they unbutton? 	shouldn't I be unbuttoning?
shouldn't you be unbuttoning?
shouldn't he be unbuttoning?
shouldn't we be unbuttoning?
shouldn't you be unbuttoning?
shouldn't they be unbuttoning? 	shouldn't I have unbuttoned?
shouldn't you have unbuttoned?
shouldn't he have unbuttoned?
shouldn't we have unbuttoned?
shouldn't you have unbuttoned?
shouldn't they have unbuttoned? 	shouldn't I have been unbuttoning?
shouldn't you have been unbuttoning?
shouldn't he have been unbuttoning?
shouldn't we have been unbuttoning?
shouldn't you have been unbuttoning?
shouldn't they have been unbuttoning?