I may stiffen you may stiffen she may stiffen we may stiffen you may stiffen they may stiffen
Forma com V-ing
I may be stiffening you may be stiffening she may be stiffening we may be stiffening you may be stiffening they may be stiffening
Perfeito
I may have stiffened you may have stiffened she may have stiffened we may have stiffened you may have stiffened they may have stiffened
Perfeito com V-ing
I may have been stiffening you may have been stiffening she may have been stiffening we may have been stiffening you may have been stiffening they may have been stiffening
Negação
Forma simple
I may not stiffen you may not stiffen she may not stiffen we may not stiffen you may not stiffen they may not stiffen
Forma com V-ing
I may not be stiffening you may not be stiffening she may not be stiffening we may not be stiffening you may not be stiffening they may not be stiffening
Perfeito
I may not have stiffened you may not have stiffened she may not have stiffened we may not have stiffened you may not have stiffened they may not have stiffened
Perfeito com V-ing
I may not have been stiffening you may not have been stiffening she may not have been stiffening we may not have been stiffening you may not have been stiffening they may not have been stiffening
Forma interrogativa
Forma simple
may I stiffen? may you stiffen? may she stiffen? may we stiffen? may you stiffen? may they stiffen?
Forma com V-ing
may I be stiffening? may you be stiffening? may she be stiffening? may we be stiffening? may you be stiffening? may they be stiffening?
Perfeito
may I have stiffened? may you have stiffened? may she have stiffened? may we have stiffened? may you have stiffened? may they have stiffened?
Perfeito com V-ing
may I have been stiffening? may you have been stiffening? may she have been stiffening? may we have been stiffening? may you have been stiffening? may they have been stiffening?
Forma interro-Negação
Forma simple
may I not stiffen? may you not stiffen? may she not stiffen? may we not stiffen? may you not stiffen? may they not stiffen?
Forma com V-ing
may I not be stiffening? may you not be stiffening? may she not be stiffening? may we not be stiffening? may you not be stiffening? may they not be stiffening?
Perfeito
may I not have stiffened? may you not have stiffened? may she not have stiffened? may we not have stiffened? may you not have stiffened? may they not have stiffened?
Perfeito com V-ing
may I not have been stiffening? may you not have been stiffening? may she not have been stiffening? may we not have been stiffening? may you not have been stiffening? may they not have been stiffening?