should rust
Verbo regular: rust - rusted- rusted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd rust
you'd rust
she'd rust
we'd rust
you'd rust
they'd rust 	I'd be rusting
you'd be rusting
she'd be rusting
we'd be rusting
you'd be rusting
they'd be rusting	I should've rusted
you should've rusted
she should've rusted
we should've rusted
you should've rusted
they should've rusted	I should've been rusting
you should've been rusting
she should've been rusting
we should've been rusting
you should've been rusting
they should've been rusting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't rust
you shouldn't rust
she shouldn't rust
we shouldn't rust
you shouldn't rust
they shouldn't rust 	I shouldn't be rusting
you shouldn't be rusting
she shouldn't be rusting
we shouldn't be rusting
you shouldn't be rusting
they shouldn't be rusting	I shouldn't have rusted
you shouldn't have rusted
she shouldn't have rusted
we shouldn't have rusted
you shouldn't have rusted
they shouldn't have rusted	I shouldn't have been rusting
you shouldn't have been rusting
she shouldn't have been rusting
we shouldn't have been rusting
you shouldn't have been rusting
they shouldn't have been rusting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I rust?
should you rust?
should she rust?
should we rust?
should you rust?
should they rust? 	should I be rusting?
should you be rusting?
should she be rusting?
should we be rusting?
should you be rusting?
should they be rusting? 	should I have rusted?
should you have rusted?
should she have rusted?
should we have rusted?
should you have rusted?
should they have rusted? 	should I have been rusting?
should you have been rusting?
should she have been rusting?
should we have been rusting?
should you have been rusting?
should they have been rusting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I rust?
shouldn't you rust?
shouldn't she rust?
shouldn't we rust?
shouldn't you rust?
shouldn't they rust? 	shouldn't I be rusting?
shouldn't you be rusting?
shouldn't she be rusting?
shouldn't we be rusting?
shouldn't you be rusting?
shouldn't they be rusting? 	shouldn't I have rusted?
shouldn't you have rusted?
shouldn't she have rusted?
shouldn't we have rusted?
shouldn't you have rusted?
shouldn't they have rusted? 	shouldn't I have been rusting?
shouldn't you have been rusting?
shouldn't she have been rusting?
shouldn't we have been rusting?
shouldn't you have been rusting?
shouldn't they have been rusting?