should bum
Verbo regular: bum - bummed- bummed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd bum
you'd bum
he'd bum
we'd bum
you'd bum
they'd bum 	I'd be bumming
you'd be bumming
he'd be bumming
we'd be bumming
you'd be bumming
they'd be bumming	I should've bummed
you should've bummed
he should've bummed
we should've bummed
you should've bummed
they should've bummed	I should've been bumming
you should've been bumming
he should've been bumming
we should've been bumming
you should've been bumming
they should've been bumming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't bum
you shouldn't bum
he shouldn't bum
we shouldn't bum
you shouldn't bum
they shouldn't bum 	I shouldn't be bumming
you shouldn't be bumming
he shouldn't be bumming
we shouldn't be bumming
you shouldn't be bumming
they shouldn't be bumming	I shouldn't have bummed
you shouldn't have bummed
he shouldn't have bummed
we shouldn't have bummed
you shouldn't have bummed
they shouldn't have bummed	I shouldn't have been bumming
you shouldn't have been bumming
he shouldn't have been bumming
we shouldn't have been bumming
you shouldn't have been bumming
they shouldn't have been bumming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I bum?
should you bum?
should he bum?
should we bum?
should you bum?
should they bum? 	should I be bumming?
should you be bumming?
should he be bumming?
should we be bumming?
should you be bumming?
should they be bumming? 	should I have bummed?
should you have bummed?
should he have bummed?
should we have bummed?
should you have bummed?
should they have bummed? 	should I have been bumming?
should you have been bumming?
should he have been bumming?
should we have been bumming?
should you have been bumming?
should they have been bumming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I bum?
shouldn't you bum?
shouldn't he bum?
shouldn't we bum?
shouldn't you bum?
shouldn't they bum? 	shouldn't I be bumming?
shouldn't you be bumming?
shouldn't he be bumming?
shouldn't we be bumming?
shouldn't you be bumming?
shouldn't they be bumming? 	shouldn't I have bummed?
shouldn't you have bummed?
shouldn't he have bummed?
shouldn't we have bummed?
shouldn't you have bummed?
shouldn't they have bummed? 	shouldn't I have been bumming?
shouldn't you have been bumming?
shouldn't he have been bumming?
shouldn't we have been bumming?
shouldn't you have been bumming?
shouldn't they have been bumming?