must counterstep
Verbe régulier : counterstep - countersteped- countersteped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must counterstep
you must counterstep
she must counterstep
we must counterstep
you must counterstep
they must counterstep 	I must be countersteping
you must be countersteping
she must be countersteping
we must be countersteping
you must be countersteping
they must be countersteping	I must have countersteped
you must have countersteped
she must have countersteped
we must have countersteped
you must have countersteped
they must have countersteped	I must have been countersteping
you must have been countersteping
she must have been countersteping
we must have been countersteping
you must have been countersteping
they must have been countersteping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not counterstep
you must not counterstep
she must not counterstep
we must not counterstep
you must not counterstep
they must not counterstep 	I must not be countersteping
you must not be countersteping
she must not be countersteping
we must not be countersteping
you must not be countersteping
they must not be countersteping	I must not have countersteped
you must not have countersteped
she must not have countersteped
we must not have countersteped
you must not have countersteped
they must not have countersteped	I must not have been countersteping
you must not have been countersteping
she must not have been countersteping
we must not have been countersteping
you must not have been countersteping
they must not have been countersteping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I counterstep?
must you counterstep?
must she counterstep?
must we counterstep?
must you counterstep?
must they counterstep? 	must I be countersteping?
must you be countersteping?
must she be countersteping?
must we be countersteping?
must you be countersteping?
must they be countersteping? 	must I have countersteped?
must you have countersteped?
must she have countersteped?
must we have countersteped?
must you have countersteped?
must they have countersteped? 	must I have been countersteping?
must you have been countersteping?
must she have been countersteping?
must we have been countersteping?
must you have been countersteping?
must they have been countersteping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not counterstep?
must you not counterstep?
must she not counterstep?
must we not counterstep?
must you not counterstep?
must they not counterstep? 	must I not be countersteping?
must you not be countersteping?
must she not be countersteping?
must we not be countersteping?
must you not be countersteping?
must they not be countersteping? 	must I not have countersteped?
must you not have countersteped?
must she not have countersteped?
must we not have countersteped?
must you not have countersteped?
must they not have countersteped? 	must I not have been countersteping?
must you not have been countersteping?
must she not have been countersteping?
must we not have been countersteping?
must you not have been countersteping?
must they not have been countersteping?