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