should cluster
Verbo regular: cluster - clustered- clustered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd cluster
you'd cluster
he'd cluster
we'd cluster
you'd cluster
they'd cluster 	I'd be clustering
you'd be clustering
he'd be clustering
we'd be clustering
you'd be clustering
they'd be clustering	I should've clustered
you should've clustered
he should've clustered
we should've clustered
you should've clustered
they should've clustered	I should've been clustering
you should've been clustering
he should've been clustering
we should've been clustering
you should've been clustering
they should've been clustering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shouldn't cluster
you shouldn't cluster
he shouldn't cluster
we shouldn't cluster
you shouldn't cluster
they shouldn't cluster 	I shouldn't be clustering
you shouldn't be clustering
he shouldn't be clustering
we shouldn't be clustering
you shouldn't be clustering
they shouldn't be clustering	I shouldn't have clustered
you shouldn't have clustered
he shouldn't have clustered
we shouldn't have clustered
you shouldn't have clustered
they shouldn't have clustered	I shouldn't have been clustering
you shouldn't have been clustering
he shouldn't have been clustering
we shouldn't have been clustering
you shouldn't have been clustering
they shouldn't have been clustering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I cluster?
should you cluster?
should he cluster?
should we cluster?
should you cluster?
should they cluster? 	should I be clustering?
should you be clustering?
should he be clustering?
should we be clustering?
should you be clustering?
should they be clustering? 	should I have clustered?
should you have clustered?
should he have clustered?
should we have clustered?
should you have clustered?
should they have clustered? 	should I have been clustering?
should you have been clustering?
should he have been clustering?
should we have been clustering?
should you have been clustering?
should they have been clustering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shouldn't I cluster?
shouldn't you cluster?
shouldn't he cluster?
shouldn't we cluster?
shouldn't you cluster?
shouldn't they cluster? 	shouldn't I be clustering?
shouldn't you be clustering?
shouldn't he be clustering?
shouldn't we be clustering?
shouldn't you be clustering?
shouldn't they be clustering? 	shouldn't I have clustered?
shouldn't you have clustered?
shouldn't he have clustered?
shouldn't we have clustered?
shouldn't you have clustered?
shouldn't they have clustered? 	shouldn't I have been clustering?
shouldn't you have been clustering?
shouldn't he have been clustering?
shouldn't we have been clustering?
shouldn't you have been clustering?
shouldn't they have been clustering?