I must burn you must burn she must burn we must burn you must burn they must burn
Forme en V-ing
I must be burning you must be burning she must be burning we must be burning you must be burning they must be burning
Perfect
I must have burned you must have burned she must have burned we must have burned you must have burned they must have burned
Perfect en V-ing
I must have been burning you must have been burning she must have been burning we must have been burning you must have been burning they must have been burning
Négation
Forme simple
I must not burn you must not burn she must not burn we must not burn you must not burn they must not burn
Forme en V-ing
I must not be burning you must not be burning she must not be burning we must not be burning you must not be burning they must not be burning
Perfect
I must not have burned you must not have burned she must not have burned we must not have burned you must not have burned they must not have burned
Perfect en V-ing
I must not have been burning you must not have been burning she must not have been burning we must not have been burning you must not have been burning they must not have been burning
Forme interrogative
Forme simple
must I burn? must you burn? must she burn? must we burn? must you burn? must they burn?
Forme en V-ing
must I be burning? must you be burning? must she be burning? must we be burning? must you be burning? must they be burning?
Perfect
must I have burned? must you have burned? must she have burned? must we have burned? must you have burned? must they have burned?
Perfect en V-ing
must I have been burning? must you have been burning? must she have been burning? must we have been burning? must you have been burning? must they have been burning?
Forme interro-négative
Forme simple
must I not burn? must you not burn? must she not burn? must we not burn? must you not burn? must they not burn?
Forme en V-ing
must I not be burning? must you not be burning? must she not be burning? must we not be burning? must you not be burning? must they not be burning?
Perfect
must I not have burned? must you not have burned? must she not have burned? must we not have burned? must you not have burned? must they not have burned?
Perfect en V-ing
must I not have been burning? must you not have been burning? must she not have been burning? must we not have been burning? must you not have been burning? must they not have been burning?