I must stiffen you must stiffen he must stiffen we must stiffen you must stiffen they must stiffen
Form mit V-ing
I must be stiffening you must be stiffening he must be stiffening we must be stiffening you must be stiffening they must be stiffening
Perfekt
I must have stiffened you must have stiffened he must have stiffened we must have stiffened you must have stiffened they must have stiffened
Perfekt mit V-ing
I must have been stiffening you must have been stiffening he must have been stiffening we must have been stiffening you must have been stiffening they must have been stiffening
Negation
Einfache Form
I must not stiffen you must not stiffen he must not stiffen we must not stiffen you must not stiffen they must not stiffen
Form mit V-ing
I must not be stiffening you must not be stiffening he must not be stiffening we must not be stiffening you must not be stiffening they must not be stiffening
Perfekt
I must not have stiffened you must not have stiffened he must not have stiffened we must not have stiffened you must not have stiffened they must not have stiffened
Perfekt mit V-ing
I must not have been stiffening you must not have been stiffening he must not have been stiffening we must not have been stiffening you must not have been stiffening they must not have been stiffening
Fragende Form
Einfache Form
must I stiffen? must you stiffen? must he stiffen? must we stiffen? must you stiffen? must they stiffen?
Form mit V-ing
must I be stiffening? must you be stiffening? must he be stiffening? must we be stiffening? must you be stiffening? must they be stiffening?
Perfekt
must I have stiffened? must you have stiffened? must he have stiffened? must we have stiffened? must you have stiffened? must they have stiffened?
Perfekt mit V-ing
must I have been stiffening? must you have been stiffening? must he have been stiffening? must we have been stiffening? must you have been stiffening? must they have been stiffening?
Fragende Negation Form
Einfache Form
must I not stiffen? must you not stiffen? must he not stiffen? must we not stiffen? must you not stiffen? must they not stiffen?
Form mit V-ing
must I not be stiffening? must you not be stiffening? must he not be stiffening? must we not be stiffening? must you not be stiffening? must they not be stiffening?
Perfekt
must I not have stiffened? must you not have stiffened? must he not have stiffened? must we not have stiffened? must you not have stiffened? must they not have stiffened?
Perfekt mit V-ing
must I not have been stiffening? must you not have been stiffening? must he not have been stiffening? must we not have been stiffening? must you not have been stiffening? must they not have been stiffening?