English verb conjugation
MUST KO

Regular verb: ko - koed - koed

Affirmation

Simple form	V-ing form
I must ko you must ko he must ko we must ko you must ko they must ko	I must be koing you must be koing he must be koing we must be koing you must be koing they must be koing
Perfect	V-ing perfect
I must have koed you must have koed he must have koed we must have koed you must have koed they must have koed	I must have been koing you must have been koing he must have been koing we must have been koing you must have been koing they must have been koing

Negation

Simple form	V-ing form
I must not ko you must not ko he must not ko we must not ko you must not ko they must not ko	I must not be koing you must not be koing he must not be koing we must not be koing you must not be koing they must not be koing
Perfect	V-ing perfect
I must not have koed you must not have koed he must not have koed we must not have koed you must not have koed they must not have koed	I must not have been koing you must not have been koing he must not have been koing we must not have been koing you must not have been koing they must not have been koing

Interrogative form

Simple form	V-ing form
must I ko? must you ko? must he ko? must we ko? must you ko? must they ko?	must I be koing? must you be koing? must he be koing? must we be koing? must you be koing? must they be koing?
Perfect	V-ing perfect
must I have koed? must you have koed? must he have koed? must we have koed? must you have koed? must they have koed?	must I have been koing? must you have been koing? must he have been koing? must we have been koing? must you have been koing? must they have been koing?

Interro-negative form

Simple form	V-ing form
must I not ko? must you not ko? must he not ko? must we not ko? must you not ko? must they not ko?	must I not be koing? must you not be koing? must he not be koing? must we not be koing? must you not be koing? must they not be koing?
Perfect	V-ing perfect
must I not have koed? must you not have koed? must he not have koed? must we not have koed? must you not have koed? must they not have koed?	must I not have been koing? must you not have been koing? must he not have been koing? must we not have been koing? must you not have been koing? must they not have been koing?