English verb conjugation
MUST COUNTERSTEP

Regular verb: counterstep - countersteped - countersteped

Affirmation

Simple form	V-ing form
I must counterstep you must counterstep he must counterstep we must counterstep you must counterstep they must counterstep	I must be countersteping you must be countersteping he must be countersteping we must be countersteping you must be countersteping they must be countersteping
Perfect	V-ing perfect
I must have countersteped you must have countersteped he 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 he must have been countersteping we must have been countersteping you must have been countersteping they must have been countersteping

Negation

Simple form	V-ing form
I mustn't counterstep you mustn't counterstep he mustn't counterstep we mustn't counterstep you mustn't counterstep they mustn't counterstep	I mustn't be countersteping you mustn't be countersteping he mustn't be countersteping we mustn't be countersteping you mustn't be countersteping they mustn't be countersteping
Perfect	V-ing perfect
I mustn't have countersteped you mustn't have countersteped he mustn't have countersteped we mustn't have countersteped you mustn't have countersteped they mustn't have countersteped	I mustn't have been countersteping you mustn't have been countersteping he mustn't have been countersteping we mustn't have been countersteping you mustn't have been countersteping they mustn't have been countersteping

Interrogative form

Simple form	V-ing form
must I counterstep? must you counterstep? must he counterstep? must we counterstep? must you counterstep? must they counterstep?	must I be countersteping? must you be countersteping? must he be countersteping? must we be countersteping? must you be countersteping? must they be countersteping?
Perfect	V-ing perfect
must I have countersteped? must you have countersteped? must he 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 he have been countersteping? must we have been countersteping? must you have been countersteping? must they have been countersteping?

Interro-negative form

Simple form	V-ing form
mustn't I counterstep? mustn't you counterstep? mustn't he counterstep? mustn't we counterstep? mustn't you counterstep? mustn't they counterstep?	mustn't I be countersteping? mustn't you be countersteping? mustn't he be countersteping? mustn't we be countersteping? mustn't you be countersteping? mustn't they be countersteping?
Perfect	V-ing perfect
mustn't I have countersteped? mustn't you have countersteped? mustn't he have countersteped? mustn't we have countersteped? mustn't you have countersteped? mustn't they have countersteped?	mustn't I have been countersteping? mustn't you have been countersteping? mustn't he have been countersteping? mustn't we have been countersteping? mustn't you have been countersteping? mustn't they have been countersteping?