English verb conjugation
MUST WALK

Regular verb: walk - walked - walked

Affirmation

Simple form	V-ing form
I must walk you must walk he must walk we must walk you must walk they must walk	I must be walking you must be walking he must be walking we must be walking you must be walking they must be walking
Perfect	V-ing perfect
I must have walked you must have walked he must have walked we must have walked you must have walked they must have walked	I must have been walking you must have been walking he must have been walking we must have been walking you must have been walking they must have been walking

Negation

Simple form	V-ing form
I must not walk you must not walk he must not walk we must not walk you must not walk they must not walk	I must not be walking you must not be walking he must not be walking we must not be walking you must not be walking they must not be walking
Perfect	V-ing perfect
I must not have walked you must not have walked he must not have walked we must not have walked you must not have walked they must not have walked	I must not have been walking you must not have been walking he must not have been walking we must not have been walking you must not have been walking they must not have been walking

Interrogative form

Simple form	V-ing form
must I walk? must you walk? must he walk? must we walk? must you walk? must they walk?	must I be walking? must you be walking? must he be walking? must we be walking? must you be walking? must they be walking?
Perfect	V-ing perfect
must I have walked? must you have walked? must he have walked? must we have walked? must you have walked? must they have walked?	must I have been walking? must you have been walking? must he have been walking? must we have been walking? must you have been walking? must they have been walking?

Interro-negative form

Simple form	V-ing form
must I not walk? must you not walk? must he not walk? must we not walk? must you not walk? must they not walk?	must I not be walking? must you not be walking? must he not be walking? must we not be walking? must you not be walking? must they not be walking?
Perfect	V-ing perfect
must I not have walked? must you not have walked? must he not have walked? must we not have walked? must you not have walked? must they not have walked?	must I not have been walking? must you not have been walking? must he not have been walking? must we not have been walking? must you not have been walking? must they not have been walking?