should attack
Verbo regular: attack - attacked- attacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd attack
you'd attack
he'd attack
we'd attack
you'd attack
they'd attack 	I'd be attacking
you'd be attacking
he'd be attacking
we'd be attacking
you'd be attacking
they'd be attacking	I should've attacked
you should've attacked
he should've attacked
we should've attacked
you should've attacked
they should've attacked	I should've been attacking
you should've been attacking
he should've been attacking
we should've been attacking
you should've been attacking
they should've been attacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't attack
you shouldn't attack
he shouldn't attack
we shouldn't attack
you shouldn't attack
they shouldn't attack 	I shouldn't be attacking
you shouldn't be attacking
he shouldn't be attacking
we shouldn't be attacking
you shouldn't be attacking
they shouldn't be attacking	I shouldn't have attacked
you shouldn't have attacked
he shouldn't have attacked
we shouldn't have attacked
you shouldn't have attacked
they shouldn't have attacked	I shouldn't have been attacking
you shouldn't have been attacking
he shouldn't have been attacking
we shouldn't have been attacking
you shouldn't have been attacking
they shouldn't have been attacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I attack?
should you attack?
should he attack?
should we attack?
should you attack?
should they attack? 	should I be attacking?
should you be attacking?
should he be attacking?
should we be attacking?
should you be attacking?
should they be attacking? 	should I have attacked?
should you have attacked?
should he have attacked?
should we have attacked?
should you have attacked?
should they have attacked? 	should I have been attacking?
should you have been attacking?
should he have been attacking?
should we have been attacking?
should you have been attacking?
should they have been attacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I attack?
shouldn't you attack?
shouldn't he attack?
shouldn't we attack?
shouldn't you attack?
shouldn't they attack? 	shouldn't I be attacking?
shouldn't you be attacking?
shouldn't he be attacking?
shouldn't we be attacking?
shouldn't you be attacking?
shouldn't they be attacking? 	shouldn't I have attacked?
shouldn't you have attacked?
shouldn't he have attacked?
shouldn't we have attacked?
shouldn't you have attacked?
shouldn't they have attacked? 	shouldn't I have been attacking?
shouldn't you have been attacking?
shouldn't he have been attacking?
shouldn't we have been attacking?
shouldn't you have been attacking?
shouldn't they have been attacking?