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