must quickstep
Verbe régulier : quickstep - quicksteped- quicksteped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must quickstep
you must quickstep
he must quickstep
we must quickstep
you must quickstep
they must quickstep 	I must be quicksteping
you must be quicksteping
he must be quicksteping
we must be quicksteping
you must be quicksteping
they must be quicksteping	I must have quicksteped
you must have quicksteped
he must have quicksteped
we must have quicksteped
you must have quicksteped
they must have quicksteped	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 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't quickstep
you mustn't quickstep
he mustn't quickstep
we mustn't quickstep
you mustn't quickstep
they mustn't quickstep 	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	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	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 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I quickstep?
must you quickstep?
must he quickstep?
must we quickstep?
must you quickstep?
must they quickstep? 	must I be quicksteping?
must you be quicksteping?
must he be quicksteping?
must we be quicksteping?
must you be quicksteping?
must they be quicksteping? 	must I have quicksteped?
must you have quicksteped?
must he have quicksteped?
must we have quicksteped?
must you have quicksteped?
must they have quicksteped? 	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 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I quickstep?
mustn't you quickstep?
mustn't he quickstep?
mustn't we quickstep?
mustn't you quickstep?
mustn't they quickstep? 	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? 	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? 	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?