I must whiten you must whiten he must whiten we must whiten you must whiten they must whiten
Forme en V-ing
I must be whitening you must be whitening he must be whitening we must be whitening you must be whitening they must be whitening
Perfect
I must have whitened you must have whitened he must have whitened we must have whitened you must have whitened they must have whitened
Perfect en V-ing
I must have been whitening you must have been whitening he must have been whitening we must have been whitening you must have been whitening they must have been whitening
Négation
Forme simple
I must not whiten you must not whiten he must not whiten we must not whiten you must not whiten they must not whiten
Forme en V-ing
I must not be whitening you must not be whitening he must not be whitening we must not be whitening you must not be whitening they must not be whitening
Perfect
I must not have whitened you must not have whitened he must not have whitened we must not have whitened you must not have whitened they must not have whitened
Perfect en V-ing
I must not have been whitening you must not have been whitening he must not have been whitening we must not have been whitening you must not have been whitening they must not have been whitening
Forme interrogative
Forme simple
must I whiten? must you whiten? must he whiten? must we whiten? must you whiten? must they whiten?
Forme en V-ing
must I be whitening? must you be whitening? must he be whitening? must we be whitening? must you be whitening? must they be whitening?
Perfect
must I have whitened? must you have whitened? must he have whitened? must we have whitened? must you have whitened? must they have whitened?
Perfect en V-ing
must I have been whitening? must you have been whitening? must he have been whitening? must we have been whitening? must you have been whitening? must they have been whitening?
Forme interro-négative
Forme simple
must I not whiten? must you not whiten? must he not whiten? must we not whiten? must you not whiten? must they not whiten?
Forme en V-ing
must I not be whitening? must you not be whitening? must he not be whitening? must we not be whitening? must you not be whitening? must they not be whitening?
Perfect
must I not have whitened? must you not have whitened? must he not have whitened? must we not have whitened? must you not have whitened? must they not have whitened?
Perfect en V-ing
must I not have been whitening? must you not have been whitening? must he not have been whitening? must we not have been whitening? must you not have been whitening? must they not have been whitening?