English verb conjugation
MUST EXPURGATE

Regular verb: expurgate - expurgated - expurgated

Affirmation

Simple form	V-ing form
I must expurgate you must expurgate he must expurgate we must expurgate you must expurgate they must expurgate	I must be expurgating you must be expurgating he must be expurgating we must be expurgating you must be expurgating they must be expurgating
Perfect	V-ing perfect
I must have expurgated you must have expurgated he must have expurgated we must have expurgated you must have expurgated they must have expurgated	I must have been expurgating you must have been expurgating he must have been expurgating we must have been expurgating you must have been expurgating they must have been expurgating

Negation

Simple form	V-ing form
I must not expurgate you must not expurgate he must not expurgate we must not expurgate you must not expurgate they must not expurgate	I must not be expurgating you must not be expurgating he must not be expurgating we must not be expurgating you must not be expurgating they must not be expurgating
Perfect	V-ing perfect
I must not have expurgated you must not have expurgated he must not have expurgated we must not have expurgated you must not have expurgated they must not have expurgated	I must not have been expurgating you must not have been expurgating he must not have been expurgating we must not have been expurgating you must not have been expurgating they must not have been expurgating

Interrogative form

Simple form	V-ing form
must I expurgate? must you expurgate? must he expurgate? must we expurgate? must you expurgate? must they expurgate?	must I be expurgating? must you be expurgating? must he be expurgating? must we be expurgating? must you be expurgating? must they be expurgating?
Perfect	V-ing perfect
must I have expurgated? must you have expurgated? must he have expurgated? must we have expurgated? must you have expurgated? must they have expurgated?	must I have been expurgating? must you have been expurgating? must he have been expurgating? must we have been expurgating? must you have been expurgating? must they have been expurgating?

Interro-negative form

Simple form	V-ing form
must I not expurgate? must you not expurgate? must he not expurgate? must we not expurgate? must you not expurgate? must they not expurgate?	must I not be expurgating? must you not be expurgating? must he not be expurgating? must we not be expurgating? must you not be expurgating? must they not be expurgating?
Perfect	V-ing perfect
must I not have expurgated? must you not have expurgated? must he not have expurgated? must we not have expurgated? must you not have expurgated? must they not have expurgated?	must I not have been expurgating? must you not have been expurgating? must he not have been expurgating? must we not have been expurgating? must you not have been expurgating? must they not have been expurgating?