Attenzione, questo verbo potrebbe non esistere, la coniugazione viene fornita come esempio.
Affermazione
Forma semplice
I must stiffer you must stiffer he must stiffer we must stiffer you must stiffer they must stiffer
Forma con V-ing
I must be stiffering you must be stiffering he must be stiffering we must be stiffering you must be stiffering they must be stiffering
Perfetto
I must have stiffered you must have stiffered he must have stiffered we must have stiffered you must have stiffered they must have stiffered
Perfetto con V-ing
I must have been stiffering you must have been stiffering he must have been stiffering we must have been stiffering you must have been stiffering they must have been stiffering
Negazione
Forma semplice
I must not stiffer you must not stiffer he must not stiffer we must not stiffer you must not stiffer they must not stiffer
Forma con V-ing
I must not be stiffering you must not be stiffering he must not be stiffering we must not be stiffering you must not be stiffering they must not be stiffering
Perfetto
I must not have stiffered you must not have stiffered he must not have stiffered we must not have stiffered you must not have stiffered they must not have stiffered
Perfetto con V-ing
I must not have been stiffering you must not have been stiffering he must not have been stiffering we must not have been stiffering you must not have been stiffering they must not have been stiffering
Forma interrogativa
Forma semplice
must I stiffer? must you stiffer? must he stiffer? must we stiffer? must you stiffer? must they stiffer?
Forma con V-ing
must I be stiffering? must you be stiffering? must he be stiffering? must we be stiffering? must you be stiffering? must they be stiffering?
Perfetto
must I have stiffered? must you have stiffered? must he have stiffered? must we have stiffered? must you have stiffered? must they have stiffered?
Perfetto con V-ing
must I have been stiffering? must you have been stiffering? must he have been stiffering? must we have been stiffering? must you have been stiffering? must they have been stiffering?
Forma interro-negativa
Forma semplice
must I not stiffer? must you not stiffer? must he not stiffer? must we not stiffer? must you not stiffer? must they not stiffer?
Forma con V-ing
must I not be stiffering? must you not be stiffering? must he not be stiffering? must we not be stiffering? must you not be stiffering? must they not be stiffering?
Perfetto
must I not have stiffered? must you not have stiffered? must he not have stiffered? must we not have stiffered? must you not have stiffered? must they not have stiffered?
Perfetto con V-ing
must I not have been stiffering? must you not have been stiffering? must he not have been stiffering? must we not have been stiffering? must you not have been stiffering? must they not have been stiffering?