should drain
Verbo regular: drain - drained- drained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd drain
you'd drain
he'd drain
we'd drain
you'd drain
they'd drain 	I'd be draining
you'd be draining
he'd be draining
we'd be draining
you'd be draining
they'd be draining	I should've drained
you should've drained
he should've drained
we should've drained
you should've drained
they should've drained	I should've been draining
you should've been draining
he should've been draining
we should've been draining
you should've been draining
they should've been draining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't drain
you shouldn't drain
he shouldn't drain
we shouldn't drain
you shouldn't drain
they shouldn't drain 	I shouldn't be draining
you shouldn't be draining
he shouldn't be draining
we shouldn't be draining
you shouldn't be draining
they shouldn't be draining	I shouldn't have drained
you shouldn't have drained
he shouldn't have drained
we shouldn't have drained
you shouldn't have drained
they shouldn't have drained	I shouldn't have been draining
you shouldn't have been draining
he shouldn't have been draining
we shouldn't have been draining
you shouldn't have been draining
they shouldn't have been draining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I drain?
should you drain?
should he drain?
should we drain?
should you drain?
should they drain? 	should I be draining?
should you be draining?
should he be draining?
should we be draining?
should you be draining?
should they be draining? 	should I have drained?
should you have drained?
should he have drained?
should we have drained?
should you have drained?
should they have drained? 	should I have been draining?
should you have been draining?
should he have been draining?
should we have been draining?
should you have been draining?
should they have been draining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I drain?
shouldn't you drain?
shouldn't he drain?
shouldn't we drain?
shouldn't you drain?
shouldn't they drain? 	shouldn't I be draining?
shouldn't you be draining?
shouldn't he be draining?
shouldn't we be draining?
shouldn't you be draining?
shouldn't they be draining? 	shouldn't I have drained?
shouldn't you have drained?
shouldn't he have drained?
shouldn't we have drained?
shouldn't you have drained?
shouldn't they have drained? 	shouldn't I have been draining?
shouldn't you have been draining?
shouldn't he have been draining?
shouldn't we have been draining?
shouldn't you have been draining?
shouldn't they have been draining?