should clack
Verbo regular: clack - clacked- clacked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd clack
you'd clack
he'd clack
we'd clack
you'd clack
they'd clack 	I'd be clacking
you'd be clacking
he'd be clacking
we'd be clacking
you'd be clacking
they'd be clacking	I should've clacked
you should've clacked
he should've clacked
we should've clacked
you should've clacked
they should've clacked	I should've been clacking
you should've been clacking
he should've been clacking
we should've been clacking
you should've been clacking
they should've been clacking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't clack
you shouldn't clack
he shouldn't clack
we shouldn't clack
you shouldn't clack
they shouldn't clack 	I shouldn't be clacking
you shouldn't be clacking
he shouldn't be clacking
we shouldn't be clacking
you shouldn't be clacking
they shouldn't be clacking	I shouldn't have clacked
you shouldn't have clacked
he shouldn't have clacked
we shouldn't have clacked
you shouldn't have clacked
they shouldn't have clacked	I shouldn't have been clacking
you shouldn't have been clacking
he shouldn't have been clacking
we shouldn't have been clacking
you shouldn't have been clacking
they shouldn't have been clacking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I clack?
should you clack?
should he clack?
should we clack?
should you clack?
should they clack? 	should I be clacking?
should you be clacking?
should he be clacking?
should we be clacking?
should you be clacking?
should they be clacking? 	should I have clacked?
should you have clacked?
should he have clacked?
should we have clacked?
should you have clacked?
should they have clacked? 	should I have been clacking?
should you have been clacking?
should he have been clacking?
should we have been clacking?
should you have been clacking?
should they have been clacking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I clack?
shouldn't you clack?
shouldn't he clack?
shouldn't we clack?
shouldn't you clack?
shouldn't they clack? 	shouldn't I be clacking?
shouldn't you be clacking?
shouldn't he be clacking?
shouldn't we be clacking?
shouldn't you be clacking?
shouldn't they be clacking? 	shouldn't I have clacked?
shouldn't you have clacked?
shouldn't he have clacked?
shouldn't we have clacked?
shouldn't you have clacked?
shouldn't they have clacked? 	shouldn't I have been clacking?
shouldn't you have been clacking?
shouldn't he have been clacking?
shouldn't we have been clacking?
shouldn't you have been clacking?
shouldn't they have been clacking?