I'd be stiffening you'd be stiffening he'd be stiffening we'd be stiffening you'd be stiffening they'd be stiffening
Perfecto
I should've stiffened you should've stiffened he should've stiffened we should've stiffened you should've stiffened they should've stiffened
Perfecto con V-ing
I should've been stiffening you should've been stiffening he should've been stiffening we should've been stiffening you should've been stiffening they should've been stiffening
Negación
Forma simple
I shouldn't stiffen you shouldn't stiffen he shouldn't stiffen we shouldn't stiffen you shouldn't stiffen they shouldn't stiffen
Forma con V-ing
I shouldn't be stiffening you shouldn't be stiffening he shouldn't be stiffening we shouldn't be stiffening you shouldn't be stiffening they shouldn't be stiffening
Perfecto
I shouldn't have stiffened you shouldn't have stiffened he shouldn't have stiffened we shouldn't have stiffened you shouldn't have stiffened they shouldn't have stiffened
Perfecto con V-ing
I shouldn't have been stiffening you shouldn't have been stiffening he shouldn't have been stiffening we shouldn't have been stiffening you shouldn't have been stiffening they shouldn't have been stiffening
Forma interrogativa
Forma simple
should I stiffen? should you stiffen? should he stiffen? should we stiffen? should you stiffen? should they stiffen?
Forma con V-ing
should I be stiffening? should you be stiffening? should he be stiffening? should we be stiffening? should you be stiffening? should they be stiffening?
Perfecto
should I have stiffened? should you have stiffened? should he have stiffened? should we have stiffened? should you have stiffened? should they have stiffened?
Perfecto con V-ing
should I have been stiffening? should you have been stiffening? should he have been stiffening? should we have been stiffening? should you have been stiffening? should they have been stiffening?
Forma interro-negativa
Forma simple
shouldn't I stiffen? shouldn't you stiffen? shouldn't he stiffen? shouldn't we stiffen? shouldn't you stiffen? shouldn't they stiffen?
Forma con V-ing
shouldn't I be stiffening? shouldn't you be stiffening? shouldn't he be stiffening? shouldn't we be stiffening? shouldn't you be stiffening? shouldn't they be stiffening?
Perfecto
shouldn't I have stiffened? shouldn't you have stiffened? shouldn't he have stiffened? shouldn't we have stiffened? shouldn't you have stiffened? shouldn't they have stiffened?
Perfecto con V-ing
shouldn't I have been stiffening? shouldn't you have been stiffening? shouldn't he have been stiffening? shouldn't we have been stiffening? shouldn't you have been stiffening? shouldn't they have been stiffening?