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