ought to stiffen
Verbo regolare: stiffen - stiffened- stiffened

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I ought to stiffen
you ought to stiffen
he ought to stiffen
we ought to stiffen
you ought to stiffen
they ought to stiffen 	I ought to be stiffening
you ought to be stiffening
he ought to be stiffening
we ought to be stiffening
you ought to be stiffening
they ought to be stiffening	I ought to have stiffened
you ought to have stiffened
he ought to have stiffened
we ought to have stiffened
you ought to have stiffened
they ought to have stiffened	I ought to have been stiffening
you ought to have been stiffening
he ought to have been stiffening
we ought to have been stiffening
you ought to have been stiffening
they ought to have been stiffening	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I ought not to stiffen
you ought not to stiffen
he ought not to stiffen
we ought not to stiffen
you ought not to stiffen
they ought not to stiffen 	I ought not to stiffening
you ought not to stiffening
he ought not to stiffening
we ought not to stiffening
you ought not to stiffening
they ought not to stiffening	I ought not to have stiffened
you ought not to have stiffened
he ought not to have stiffened
we ought not to have stiffened
you ought not to have stiffened
they ought not to have stiffened	I ought not to have been stiffening
you ought not to have been stiffening
he ought not to have been stiffening
we ought not to have been stiffening
you ought not to have been stiffening
they ought not to have been stiffening	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
ought to I stiffen?
ought to you stiffen?
ought to he stiffen?
ought to we stiffen?
ought to you stiffen?
ought to they stiffen? 	ought to I be stiffening?
ought to you be stiffening?
ought to he be stiffening?
ought to we be stiffening?
ought to you be stiffening?
ought to they be stiffening? 	ought to I have stiffened?
ought to you have stiffened?
ought to he have stiffened?
ought to we have stiffened?
ought to you have stiffened?
ought to they have stiffened? 	ought to I have been stiffening?
ought to you have been stiffening?
ought to he have been stiffening?
ought to we have been stiffening?
ought to you have been stiffening?
ought to they have been stiffening? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
ought I not to stiffen?
ought you not to stiffen?
ought he not to stiffen?
ought we not to stiffen?
ought you not to stiffen?
ought they not to stiffen? 	ought I not to be stiffening?
ought you not to be stiffening?
ought he not to be stiffening?
ought we not to be stiffening?
ought you not to be stiffening?
ought they not to be stiffening? 	ought I not to have stiffened?
ought you not to have stiffened?
ought he not to have stiffened?
ought we not to have stiffened?
ought you not to have stiffened?
ought they not to have stiffened? 	ought I not to have been stiffening?
ought you not to have been stiffening?
ought he not to have been stiffening?
ought we not to have been stiffening?
ought you not to have been stiffening?
ought they not to have been stiffening?