I must burble you must burble she must burble we must burble you must burble they must burble
Forme en V-ing
I must be burbling you must be burbling she must be burbling we must be burbling you must be burbling they must be burbling
Perfect
I must have burbled you must have burbled she must have burbled we must have burbled you must have burbled they must have burbled
Perfect en V-ing
I must have been burbling you must have been burbling she must have been burbling we must have been burbling you must have been burbling they must have been burbling
Négation
Forme simple
I must not burble you must not burble she must not burble we must not burble you must not burble they must not burble
Forme en V-ing
I must not be burbling you must not be burbling she must not be burbling we must not be burbling you must not be burbling they must not be burbling
Perfect
I must not have burbled you must not have burbled she must not have burbled we must not have burbled you must not have burbled they must not have burbled
Perfect en V-ing
I must not have been burbling you must not have been burbling she must not have been burbling we must not have been burbling you must not have been burbling they must not have been burbling
Forme interrogative
Forme simple
must I burble? must you burble? must she burble? must we burble? must you burble? must they burble?
Forme en V-ing
must I be burbling? must you be burbling? must she be burbling? must we be burbling? must you be burbling? must they be burbling?
Perfect
must I have burbled? must you have burbled? must she have burbled? must we have burbled? must you have burbled? must they have burbled?
Perfect en V-ing
must I have been burbling? must you have been burbling? must she have been burbling? must we have been burbling? must you have been burbling? must they have been burbling?
Forme interro-négative
Forme simple
must I not burble? must you not burble? must she not burble? must we not burble? must you not burble? must they not burble?
Forme en V-ing
must I not be burbling? must you not be burbling? must she not be burbling? must we not be burbling? must you not be burbling? must they not be burbling?
Perfect
must I not have burbled? must you not have burbled? must she not have burbled? must we not have burbled? must you not have burbled? must they not have burbled?
Perfect en V-ing
must I not have been burbling? must you not have been burbling? must she not have been burbling? must we not have been burbling? must you not have been burbling? must they not have been burbling?