should straiten
Verbo regular: straiten - straitened- straitened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should straiten
you should straiten
he should straiten
we should straiten
you should straiten
they should straiten 	I should be straitening
you should be straitening
he should be straitening
we should be straitening
you should be straitening
they should be straitening	I should have straitened
you should have straitened
he should have straitened
we should have straitened
you should have straitened
they should have straitened	I should have been straitening
you should have been straitening
he should have been straitening
we should have been straitening
you should have been straitening
they should have been straitening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not straiten
you should not straiten
he should not straiten
we should not straiten
you should not straiten
they should not straiten 	I should not be straitening
you should not be straitening
he should not be straitening
we should not be straitening
you should not be straitening
they should not be straitening	I should not have straitened
you should not have straitened
he should not have straitened
we should not have straitened
you should not have straitened
they should not have straitened	I should not have been straitening
you should not have been straitening
he should not have been straitening
we should not have been straitening
you should not have been straitening
they should not have been straitening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I straiten?
should you straiten?
should he straiten?
should we straiten?
should you straiten?
should they straiten? 	should I be straitening?
should you be straitening?
should he be straitening?
should we be straitening?
should you be straitening?
should they be straitening? 	should I have straitened?
should you have straitened?
should he have straitened?
should we have straitened?
should you have straitened?
should they have straitened? 	should I have been straitening?
should you have been straitening?
should he have been straitening?
should we have been straitening?
should you have been straitening?
should they have been straitening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not straiten?
should you not straiten?
should he not straiten?
should we not straiten?
should you not straiten?
should they not straiten? 	should I not be straitening?
should you not be straitening?
should he not be straitening?
should we not be straitening?
should you not be straitening?
should they not be straitening? 	should I not have straitened?
should you not have straitened?
should he not have straitened?
should we not have straitened?
should you not have straitened?
should they not have straitened? 	should I not have been straitening?
should you not have been straitening?
should he not have been straitening?
should we not have been straitening?
should you not have been straitening?
should they not have been straitening?