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