should stale
Verbo regular: stale - staled- staled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should stale
you should stale
he should stale
we should stale
you should stale
they should stale 	I should be staling
you should be staling
he should be staling
we should be staling
you should be staling
they should be staling	I should have staled
you should have staled
he should have staled
we should have staled
you should have staled
they should have staled	I should have been staling
you should have been staling
he should have been staling
we should have been staling
you should have been staling
they should have been staling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not stale
you should not stale
he should not stale
we should not stale
you should not stale
they should not stale 	I should not be staling
you should not be staling
he should not be staling
we should not be staling
you should not be staling
they should not be staling	I should not have staled
you should not have staled
he should not have staled
we should not have staled
you should not have staled
they should not have staled	I should not have been staling
you should not have been staling
he should not have been staling
we should not have been staling
you should not have been staling
they should not have been staling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I stale?
should you stale?
should he stale?
should we stale?
should you stale?
should they stale? 	should I be staling?
should you be staling?
should he be staling?
should we be staling?
should you be staling?
should they be staling? 	should I have staled?
should you have staled?
should he have staled?
should we have staled?
should you have staled?
should they have staled? 	should I have been staling?
should you have been staling?
should he have been staling?
should we have been staling?
should you have been staling?
should they have been staling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not stale?
should you not stale?
should he not stale?
should we not stale?
should you not stale?
should they not stale? 	should I not be staling?
should you not be staling?
should he not be staling?
should we not be staling?
should you not be staling?
should they not be staling? 	should I not have staled?
should you not have staled?
should he not have staled?
should we not have staled?
should you not have staled?
should they not have staled? 	should I not have been staling?
should you not have been staling?
should he not have been staling?
should we not have been staling?
should you not have been staling?
should they not have been staling?