should stiffen
Regelmä&szlig;iges Verb: stiffen - stiffened- stiffened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I should stiffen
you should stiffen
she should stiffen
we should stiffen
you should stiffen
they should stiffen 	I should be stiffening
you should be stiffening
she should be stiffening
we should be stiffening
you should be stiffening
they should be stiffening	I should have stiffened
you should have stiffened
she should have stiffened
we should have stiffened
you should have stiffened
they should have stiffened	I should have been stiffening
you should have been stiffening
she should have been stiffening
we should have been stiffening
you should have been stiffening
they should have been stiffening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I should not stiffen
you should not stiffen
she should not stiffen
we should not stiffen
you should not stiffen
they should not stiffen 	I should not be stiffening
you should not be stiffening
she should not be stiffening
we should not be stiffening
you should not be stiffening
they should not be stiffening	I should not have stiffened
you should not have stiffened
she should not have stiffened
we should not have stiffened
you should not have stiffened
they should not have stiffened	I should not have been stiffening
you should not have been stiffening
she should not have been stiffening
we should not have been stiffening
you should not have been stiffening
they should not have been stiffening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
should I stiffen?
should you stiffen?
should she stiffen?
should we stiffen?
should you stiffen?
should they stiffen? 	should I be stiffening?
should you be stiffening?
should she be stiffening?
should we be stiffening?
should you be stiffening?
should they be stiffening? 	should I have stiffened?
should you have stiffened?
should she have stiffened?
should we have stiffened?
should you have stiffened?
should they have stiffened? 	should I have been stiffening?
should you have been stiffening?
should she have been stiffening?
should we have been stiffening?
should you have been stiffening?
should they have been stiffening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
should I not stiffen?
should you not stiffen?
should she not stiffen?
should we not stiffen?
should you not stiffen?
should they not stiffen? 	should I not be stiffening?
should you not be stiffening?
should she not be stiffening?
should we not be stiffening?
should you not be stiffening?
should they not be stiffening? 	should I not have stiffened?
should you not have stiffened?
should she not have stiffened?
should we not have stiffened?
should you not have stiffened?
should they not have stiffened? 	should I not have been stiffening?
should you not have been stiffening?
should she not have been stiffening?
should we not have been stiffening?
should you not have been stiffening?
should they not have been stiffening?