I must unchair you must unchair he must unchair we must unchair you must unchair they must unchair
Forme en V-ing
I must be unchairing you must be unchairing he must be unchairing we must be unchairing you must be unchairing they must be unchairing
Perfect
I must have unchaired you must have unchaired he must have unchaired we must have unchaired you must have unchaired they must have unchaired
Perfect en V-ing
I must have been unchairing you must have been unchairing he must have been unchairing we must have been unchairing you must have been unchairing they must have been unchairing
Négation
Forme simple
I must not unchair you must not unchair he must not unchair we must not unchair you must not unchair they must not unchair
Forme en V-ing
I must not be unchairing you must not be unchairing he must not be unchairing we must not be unchairing you must not be unchairing they must not be unchairing
Perfect
I must not have unchaired you must not have unchaired he must not have unchaired we must not have unchaired you must not have unchaired they must not have unchaired
Perfect en V-ing
I must not have been unchairing you must not have been unchairing he must not have been unchairing we must not have been unchairing you must not have been unchairing they must not have been unchairing
Forme interrogative
Forme simple
must I unchair? must you unchair? must he unchair? must we unchair? must you unchair? must they unchair?
Forme en V-ing
must I be unchairing? must you be unchairing? must he be unchairing? must we be unchairing? must you be unchairing? must they be unchairing?
Perfect
must I have unchaired? must you have unchaired? must he have unchaired? must we have unchaired? must you have unchaired? must they have unchaired?
Perfect en V-ing
must I have been unchairing? must you have been unchairing? must he have been unchairing? must we have been unchairing? must you have been unchairing? must they have been unchairing?
Forme interro-négative
Forme simple
must I not unchair? must you not unchair? must he not unchair? must we not unchair? must you not unchair? must they not unchair?
Forme en V-ing
must I not be unchairing? must you not be unchairing? must he not be unchairing? must we not be unchairing? must you not be unchairing? must they not be unchairing?
Perfect
must I not have unchaired? must you not have unchaired? must he not have unchaired? must we not have unchaired? must you not have unchaired? must they not have unchaired?
Perfect en V-ing
must I not have been unchairing? must you not have been unchairing? must he not have been unchairing? must we not have been unchairing? must you not have been unchairing? must they not have been unchairing?