I will stiffen you will stiffen he will stiffen we will stiffen you will stiffen they will stiffen
V-ing form
I will be stiffening you will be stiffening he will be stiffening we will be stiffening you will be stiffening they will be stiffening
Perfect
I will have stiffened you will have stiffened he will have stiffened we will have stiffened you will have stiffened they will have stiffened
V-ing perfect
I will have been stiffening you will have been stiffening he will have been stiffening we will have been stiffening you will have been stiffening they will have been stiffening
Negation
Simple form
I will not stiffen you will not stiffen he will not stiffen we will not stiffen you will not stiffen they will not stiffen
V-ing form
I will not be stiffening you will not be stiffening he will not be stiffening we will not be stiffening you will not be stiffening they will not be stiffening
Perfect
I will not have stiffened you will not have stiffened he will not have stiffened we will not have stiffened you will not have stiffened they will not have stiffened
V-ing perfect
I will not have been stiffening you will not have been stiffening he will not have been stiffening we will not have been stiffening you will not have been stiffening they will not have been stiffening
Interrogative form
Simple form
will I stiffen? will you stiffen? will he stiffen? will we stiffen? will you stiffen? will they stiffen?
V-ing form
will I be stiffening? will you be stiffening? will he be stiffening? will we be stiffening? will you be stiffening? will they be stiffening?
Perfect
will I have stiffened? will you have stiffened? will he have stiffened? will we have stiffened? will you have stiffened? will they have stiffened?
V-ing perfect
will I have been stiffening? will you have been stiffening? will he have been stiffening? will we have been stiffening? will you have been stiffening? will they have been stiffening?
Interro-negative form
Simple form
will I not stiffen? will you not stiffen? will he not stiffen? will we not stiffen? will you not stiffen? will they not stiffen?
V-ing form
will I not be stiffening? will you not be stiffening? will he not be stiffening? will we not be stiffening? will you not be stiffening? will they not be stiffening?
Perfect
will I not have stiffened? will you not have stiffened? will he not have stiffened? will we not have stiffened? will you not have stiffened? will they not have stiffened?
V-ing perfect
will I not have been stiffening? will you not have been stiffening? will he not have been stiffening? will we not have been stiffening? will you not have been stiffening? will they not have been stiffening?