must goosestep
Regular verb: goosestep - goosesteped- goosesteped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must goosestep
you must goosestep
he must goosestep
we must goosestep
you must goosestep
they must goosestep 	I must be goosesteping
you must be goosesteping
he must be goosesteping
we must be goosesteping
you must be goosesteping
they must be goosesteping	I must have goosesteped
you must have goosesteped
he must have goosesteped
we must have goosesteped
you must have goosesteped
they must have goosesteped	I must have been goosesteping
you must have been goosesteping
he must have been goosesteping
we must have been goosesteping
you must have been goosesteping
they must have been goosesteping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't goosestep
you mustn't goosestep
he mustn't goosestep
we mustn't goosestep
you mustn't goosestep
they mustn't goosestep 	I mustn't be goosesteping
you mustn't be goosesteping
he mustn't be goosesteping
we mustn't be goosesteping
you mustn't be goosesteping
they mustn't be goosesteping	I mustn't have goosesteped
you mustn't have goosesteped
he mustn't have goosesteped
we mustn't have goosesteped
you mustn't have goosesteped
they mustn't have goosesteped	I mustn't have been goosesteping
you mustn't have been goosesteping
he mustn't have been goosesteping
we mustn't have been goosesteping
you mustn't have been goosesteping
they mustn't have been goosesteping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I goosestep?
must you goosestep?
must he goosestep?
must we goosestep?
must you goosestep?
must they goosestep? 	must I be goosesteping?
must you be goosesteping?
must he be goosesteping?
must we be goosesteping?
must you be goosesteping?
must they be goosesteping? 	must I have goosesteped?
must you have goosesteped?
must he have goosesteped?
must we have goosesteped?
must you have goosesteped?
must they have goosesteped? 	must I have been goosesteping?
must you have been goosesteping?
must he have been goosesteping?
must we have been goosesteping?
must you have been goosesteping?
must they have been goosesteping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I goosestep?
mustn't you goosestep?
mustn't he goosestep?
mustn't we goosestep?
mustn't you goosestep?
mustn't they goosestep? 	mustn't I be goosesteping?
mustn't you be goosesteping?
mustn't he be goosesteping?
mustn't we be goosesteping?
mustn't you be goosesteping?
mustn't they be goosesteping? 	mustn't I have goosesteped?
mustn't you have goosesteped?
mustn't he have goosesteped?
mustn't we have goosesteped?
mustn't you have goosesteped?
mustn't they have goosesteped? 	mustn't I have been goosesteping?
mustn't you have been goosesteping?
mustn't he have been goosesteping?
mustn't we have been goosesteping?
mustn't you have been goosesteping?
mustn't they have been goosesteping?