English verb conjugation
MUST UNSTEP

Regular verb: unstep - unsteped - unsteped

Affirmation

Simple form	V-ing form
I must unstep you must unstep he must unstep we must unstep you must unstep they must unstep	I must be unsteping you must be unsteping he must be unsteping we must be unsteping you must be unsteping they must be unsteping
Perfect	V-ing perfect
I must have unsteped you must have unsteped he must have unsteped we must have unsteped you must have unsteped they must have unsteped	I must have been unsteping you must have been unsteping he must have been unsteping we must have been unsteping you must have been unsteping they must have been unsteping

Negation

Simple form	V-ing form
I mustn't unstep you mustn't unstep he mustn't unstep we mustn't unstep you mustn't unstep they mustn't unstep	I mustn't be unsteping you mustn't be unsteping he mustn't be unsteping we mustn't be unsteping you mustn't be unsteping they mustn't be unsteping
Perfect	V-ing perfect
I mustn't have unsteped you mustn't have unsteped he mustn't have unsteped we mustn't have unsteped you mustn't have unsteped they mustn't have unsteped	I mustn't have been unsteping you mustn't have been unsteping he mustn't have been unsteping we mustn't have been unsteping you mustn't have been unsteping they mustn't have been unsteping

Interrogative form

Simple form	V-ing form
must I unstep? must you unstep? must he unstep? must we unstep? must you unstep? must they unstep?	must I be unsteping? must you be unsteping? must he be unsteping? must we be unsteping? must you be unsteping? must they be unsteping?
Perfect	V-ing perfect
must I have unsteped? must you have unsteped? must he have unsteped? must we have unsteped? must you have unsteped? must they have unsteped?	must I have been unsteping? must you have been unsteping? must he have been unsteping? must we have been unsteping? must you have been unsteping? must they have been unsteping?

Interro-negative form

Simple form	V-ing form
mustn't I unstep? mustn't you unstep? mustn't he unstep? mustn't we unstep? mustn't you unstep? mustn't they unstep?	mustn't I be unsteping? mustn't you be unsteping? mustn't he be unsteping? mustn't we be unsteping? mustn't you be unsteping? mustn't they be unsteping?
Perfect	V-ing perfect
mustn't I have unsteped? mustn't you have unsteped? mustn't he have unsteped? mustn't we have unsteped? mustn't you have unsteped? mustn't they have unsteped?	mustn't I have been unsteping? mustn't you have been unsteping? mustn't he have been unsteping? mustn't we have been unsteping? mustn't you have been unsteping? mustn't they have been unsteping?