might stiffen
Verbo regular: stiffen - stiffened- stiffened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I might stiffen
you might stiffen
she might stiffen
we might stiffen
you might stiffen
they might stiffen 	I might be stiffening
you might be stiffening
she might be stiffening
we might be stiffening
you might be stiffening
they might be stiffening	I might have stiffened
you might have stiffened
she might have stiffened
we might have stiffened
you might have stiffened
they might have stiffened	I might have been stiffening
you might have been stiffening
she might have been stiffening
we might have been stiffening
you might have been stiffening
they might have been stiffening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I might not stiffen
you might not stiffen
she might not stiffen
we might not stiffen
you might not stiffen
they might not stiffen 	I might not be stiffening
you might not be stiffening
she might not be stiffening
we might not be stiffening
you might not be stiffening
they might not be stiffening	I might not have stiffened
you might not have stiffened
she might not have stiffened
we might not have stiffened
you might not have stiffened
they might not have stiffened	I might not have been stiffening
you might not have been stiffening
she might not have been stiffening
we might not have been stiffening
you might not have been stiffening
they might not have been stiffening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
might I stiffen?
might you stiffen?
might she stiffen?
might we stiffen?
might you stiffen?
might they stiffen? 	might I be stiffening?
might you be stiffening?
might she be stiffening?
might we be stiffening?
might you be stiffening?
might they be stiffening? 	might I have stiffened?
might you have stiffened?
might she have stiffened?
might we have stiffened?
might you have stiffened?
might they have stiffened? 	might I have been stiffening?
might you have been stiffening?
might she have been stiffening?
might we have been stiffening?
might you have been stiffening?
might they have been stiffening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
might I not stiffen?
might you not stiffen?
might she not stiffen?
might we not stiffen?
might you not stiffen?
might they not stiffen? 	might I not be stiffening?
might you not be stiffening?
might she not be stiffening?
might we not be stiffening?
might you not be stiffening?
might they not be stiffening? 	might I not have stiffened?
might you not have stiffened?
might she not have stiffened?
might we not have stiffened?
might you not have stiffened?
might they not have stiffened? 	might I not have been stiffening?
might you not have been stiffening?
might she not have been stiffening?
might we not have been stiffening?
might you not have been stiffening?
might they not have been stiffening?