should attain
Verbo regular: attain - attained- attained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd attain
you'd attain
she'd attain
we'd attain
you'd attain
they'd attain 	I'd be attaining
you'd be attaining
she'd be attaining
we'd be attaining
you'd be attaining
they'd be attaining	I should've attained
you should've attained
she should've attained
we should've attained
you should've attained
they should've attained	I should've been attaining
you should've been attaining
she should've been attaining
we should've been attaining
you should've been attaining
they should've been attaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't attain
you shouldn't attain
she shouldn't attain
we shouldn't attain
you shouldn't attain
they shouldn't attain 	I shouldn't be attaining
you shouldn't be attaining
she shouldn't be attaining
we shouldn't be attaining
you shouldn't be attaining
they shouldn't be attaining	I shouldn't have attained
you shouldn't have attained
she shouldn't have attained
we shouldn't have attained
you shouldn't have attained
they shouldn't have attained	I shouldn't have been attaining
you shouldn't have been attaining
she shouldn't have been attaining
we shouldn't have been attaining
you shouldn't have been attaining
they shouldn't have been attaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I attain?
should you attain?
should she attain?
should we attain?
should you attain?
should they attain? 	should I be attaining?
should you be attaining?
should she be attaining?
should we be attaining?
should you be attaining?
should they be attaining? 	should I have attained?
should you have attained?
should she have attained?
should we have attained?
should you have attained?
should they have attained? 	should I have been attaining?
should you have been attaining?
should she have been attaining?
should we have been attaining?
should you have been attaining?
should they have been attaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I attain?
shouldn't you attain?
shouldn't she attain?
shouldn't we attain?
shouldn't you attain?
shouldn't they attain? 	shouldn't I be attaining?
shouldn't you be attaining?
shouldn't she be attaining?
shouldn't we be attaining?
shouldn't you be attaining?
shouldn't they be attaining? 	shouldn't I have attained?
shouldn't you have attained?
shouldn't she have attained?
shouldn't we have attained?
shouldn't you have attained?
shouldn't they have attained? 	shouldn't I have been attaining?
shouldn't you have been attaining?
shouldn't she have been attaining?
shouldn't we have been attaining?
shouldn't you have been attaining?
shouldn't they have been attaining?