English verb conjugation
MUST CAT

Regular verb: cat - cated - cated

Affirmation

Simple form	V-ing form
I must cat you must cat he must cat we must cat you must cat they must cat	I must be cating you must be cating he must be cating we must be cating you must be cating they must be cating
Perfect	V-ing perfect
I must have cated you must have cated he must have cated we must have cated you must have cated they must have cated	I must have been cating you must have been cating he must have been cating we must have been cating you must have been cating they must have been cating

Negation

Simple form	V-ing form
I must not cat you must not cat he must not cat we must not cat you must not cat they must not cat	I must not be cating you must not be cating he must not be cating we must not be cating you must not be cating they must not be cating
Perfect	V-ing perfect
I must not have cated you must not have cated he must not have cated we must not have cated you must not have cated they must not have cated	I must not have been cating you must not have been cating he must not have been cating we must not have been cating you must not have been cating they must not have been cating

Interrogative form

Simple form	V-ing form
must I cat? must you cat? must he cat? must we cat? must you cat? must they cat?	must I be cating? must you be cating? must he be cating? must we be cating? must you be cating? must they be cating?
Perfect	V-ing perfect
must I have cated? must you have cated? must he have cated? must we have cated? must you have cated? must they have cated?	must I have been cating? must you have been cating? must he have been cating? must we have been cating? must you have been cating? must they have been cating?

Interro-negative form

Simple form	V-ing form
must I not cat? must you not cat? must he not cat? must we not cat? must you not cat? must they not cat?	must I not be cating? must you not be cating? must he not be cating? must we not be cating? must you not be cating? must they not be cating?
Perfect	V-ing perfect
must I not have cated? must you not have cated? must he not have cated? must we not have cated? must you not have cated? must they not have cated?	must I not have been cating? must you not have been cating? must he not have been cating? must we not have been cating? must you not have been cating? must they not have been cating?