I must blacken you must blacken he must blacken we must blacken you must blacken they must blacken
Forme en V-ing
I must be blackening you must be blackening he must be blackening we must be blackening you must be blackening they must be blackening
Perfect
I must have blackened you must have blackened he must have blackened we must have blackened you must have blackened they must have blackened
Perfect en V-ing
I must have been blackening you must have been blackening he must have been blackening we must have been blackening you must have been blackening they must have been blackening
Négation
Forme simple
I mustn't blacken you mustn't blacken he mustn't blacken we mustn't blacken you mustn't blacken they mustn't blacken
Forme en V-ing
I mustn't be blackening you mustn't be blackening he mustn't be blackening we mustn't be blackening you mustn't be blackening they mustn't be blackening
Perfect
I mustn't have blackened you mustn't have blackened he mustn't have blackened we mustn't have blackened you mustn't have blackened they mustn't have blackened
Perfect en V-ing
I mustn't have been blackening you mustn't have been blackening he mustn't have been blackening we mustn't have been blackening you mustn't have been blackening they mustn't have been blackening
Forme interrogative
Forme simple
must I blacken? must you blacken? must he blacken? must we blacken? must you blacken? must they blacken?
Forme en V-ing
must I be blackening? must you be blackening? must he be blackening? must we be blackening? must you be blackening? must they be blackening?
Perfect
must I have blackened? must you have blackened? must he have blackened? must we have blackened? must you have blackened? must they have blackened?
Perfect en V-ing
must I have been blackening? must you have been blackening? must he have been blackening? must we have been blackening? must you have been blackening? must they have been blackening?
Forme interro-négative
Forme simple
mustn't I blacken? mustn't you blacken? mustn't he blacken? mustn't we blacken? mustn't you blacken? mustn't they blacken?
Forme en V-ing
mustn't I be blackening? mustn't you be blackening? mustn't he be blackening? mustn't we be blackening? mustn't you be blackening? mustn't they be blackening?
Perfect
mustn't I have blackened? mustn't you have blackened? mustn't he have blackened? mustn't we have blackened? mustn't you have blackened? mustn't they have blackened?
Perfect en V-ing
mustn't I have been blackening? mustn't you have been blackening? mustn't he have been blackening? mustn't we have been blackening? mustn't you have been blackening? mustn't they have been blackening?