I must blackguard you must blackguard she must blackguard we must blackguard you must blackguard they must blackguard
Forme en V-ing
I must be blackguarding you must be blackguarding she must be blackguarding we must be blackguarding you must be blackguarding they must be blackguarding
Perfect
I must have blackguarded you must have blackguarded she must have blackguarded we must have blackguarded you must have blackguarded they must have blackguarded
Perfect en V-ing
I must have been blackguarding you must have been blackguarding she must have been blackguarding we must have been blackguarding you must have been blackguarding they must have been blackguarding
Négation
Forme simple
I mustn't blackguard you mustn't blackguard she mustn't blackguard we mustn't blackguard you mustn't blackguard they mustn't blackguard
Forme en V-ing
I mustn't be blackguarding you mustn't be blackguarding she mustn't be blackguarding we mustn't be blackguarding you mustn't be blackguarding they mustn't be blackguarding
Perfect
I mustn't have blackguarded you mustn't have blackguarded she mustn't have blackguarded we mustn't have blackguarded you mustn't have blackguarded they mustn't have blackguarded
Perfect en V-ing
I mustn't have been blackguarding you mustn't have been blackguarding she mustn't have been blackguarding we mustn't have been blackguarding you mustn't have been blackguarding they mustn't have been blackguarding
Forme interrogative
Forme simple
must I blackguard? must you blackguard? must she blackguard? must we blackguard? must you blackguard? must they blackguard?
Forme en V-ing
must I be blackguarding? must you be blackguarding? must she be blackguarding? must we be blackguarding? must you be blackguarding? must they be blackguarding?
Perfect
must I have blackguarded? must you have blackguarded? must she have blackguarded? must we have blackguarded? must you have blackguarded? must they have blackguarded?
Perfect en V-ing
must I have been blackguarding? must you have been blackguarding? must she have been blackguarding? must we have been blackguarding? must you have been blackguarding? must they have been blackguarding?
Forme interro-négative
Forme simple
mustn't I blackguard? mustn't you blackguard? mustn't she blackguard? mustn't we blackguard? mustn't you blackguard? mustn't they blackguard?
Forme en V-ing
mustn't I be blackguarding? mustn't you be blackguarding? mustn't she be blackguarding? mustn't we be blackguarding? mustn't you be blackguarding? mustn't they be blackguarding?
Perfect
mustn't I have blackguarded? mustn't you have blackguarded? mustn't she have blackguarded? mustn't we have blackguarded? mustn't you have blackguarded? mustn't they have blackguarded?
Perfect en V-ing
mustn't I have been blackguarding? mustn't you have been blackguarding? mustn't she have been blackguarding? mustn't we have been blackguarding? mustn't you have been blackguarding? mustn't they have been blackguarding?