English verb conjugation
MUST COOK

Regular verb: cook - cooked - cooked

Affirmation

Simple form	V-ing form
I must cook you must cook he must cook we must cook you must cook they must cook	I must be cooking you must be cooking he must be cooking we must be cooking you must be cooking they must be cooking
Perfect	V-ing perfect
I must have cooked you must have cooked he must have cooked we must have cooked you must have cooked they must have cooked	I must have been cooking you must have been cooking he must have been cooking we must have been cooking you must have been cooking they must have been cooking

Negation

Simple form	V-ing form
I must not cook you must not cook he must not cook we must not cook you must not cook they must not cook	I must not be cooking you must not be cooking he must not be cooking we must not be cooking you must not be cooking they must not be cooking
Perfect	V-ing perfect
I must not have cooked you must not have cooked he must not have cooked we must not have cooked you must not have cooked they must not have cooked	I must not have been cooking you must not have been cooking he must not have been cooking we must not have been cooking you must not have been cooking they must not have been cooking

Interrogative form

Simple form	V-ing form
must I cook? must you cook? must he cook? must we cook? must you cook? must they cook?	must I be cooking? must you be cooking? must he be cooking? must we be cooking? must you be cooking? must they be cooking?
Perfect	V-ing perfect
must I have cooked? must you have cooked? must he have cooked? must we have cooked? must you have cooked? must they have cooked?	must I have been cooking? must you have been cooking? must he have been cooking? must we have been cooking? must you have been cooking? must they have been cooking?

Interro-negative form

Simple form	V-ing form
must I not cook? must you not cook? must he not cook? must we not cook? must you not cook? must they not cook?	must I not be cooking? must you not be cooking? must he not be cooking? must we not be cooking? must you not be cooking? must they not be cooking?
Perfect	V-ing perfect
must I not have cooked? must you not have cooked? must he not have cooked? must we not have cooked? must you not have cooked? must they not have cooked?	must I not have been cooking? must you not have been cooking? must he not have been cooking? must we not have been cooking? must you not have been cooking? must they not have been cooking?