English verb conjugation
MUST QUICKSTEP

Regular verb: quickstep - quicksteped - quicksteped

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I must not quickstep you must not quickstep he must not quickstep we must not quickstep you must not quickstep they must not quickstep	I must not be quicksteping you must not be quicksteping he must not be quicksteping we must not be quicksteping you must not be quicksteping they must not be quicksteping
Perfect	V-ing perfect
I must not have quicksteped you must not have quicksteped he must not have quicksteped we must not have quicksteped you must not have quicksteped they must not have quicksteped	I must not have been quicksteping you must not have been quicksteping he must not have been quicksteping we must not have been quicksteping you must not have been quicksteping they must not have been quicksteping

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
must I not quickstep? must you not quickstep? must he not quickstep? must we not quickstep? must you not quickstep? must they not quickstep?	must I not be quicksteping? must you not be quicksteping? must he not be quicksteping? must we not be quicksteping? must you not be quicksteping? must they not be quicksteping?
Perfect	V-ing perfect
must I not have quicksteped? must you not have quicksteped? must he not have quicksteped? must we not have quicksteped? must you not have quicksteped? must they not have quicksteped?	must I not have been quicksteping? must you not have been quicksteping? must he not have been quicksteping? must we not have been quicksteping? must you not have been quicksteping? must they not have been quicksteping?