English verb conjugation
MUST UNDERCOOK

Regular verb: undercook - undercooked - undercooked

Affirmation

Simple form	V-ing form
I must undercook you must undercook he must undercook we must undercook you must undercook they must undercook	I must be undercooking you must be undercooking he must be undercooking we must be undercooking you must be undercooking they must be undercooking
Perfect	V-ing perfect
I must have undercooked you must have undercooked he must have undercooked we must have undercooked you must have undercooked they must have undercooked	I must have been undercooking you must have been undercooking he must have been undercooking we must have been undercooking you must have been undercooking they must have been undercooking

Negation

Simple form	V-ing form
I must not undercook you must not undercook he must not undercook we must not undercook you must not undercook they must not undercook	I must not be undercooking you must not be undercooking he must not be undercooking we must not be undercooking you must not be undercooking they must not be undercooking
Perfect	V-ing perfect
I must not have undercooked you must not have undercooked he must not have undercooked we must not have undercooked you must not have undercooked they must not have undercooked	I must not have been undercooking you must not have been undercooking he must not have been undercooking we must not have been undercooking you must not have been undercooking they must not have been undercooking

Interrogative form

Simple form	V-ing form
must I undercook? must you undercook? must he undercook? must we undercook? must you undercook? must they undercook?	must I be undercooking? must you be undercooking? must he be undercooking? must we be undercooking? must you be undercooking? must they be undercooking?
Perfect	V-ing perfect
must I have undercooked? must you have undercooked? must he have undercooked? must we have undercooked? must you have undercooked? must they have undercooked?	must I have been undercooking? must you have been undercooking? must he have been undercooking? must we have been undercooking? must you have been undercooking? must they have been undercooking?

Interro-negative form

Simple form	V-ing form
must I not undercook? must you not undercook? must he not undercook? must we not undercook? must you not undercook? must they not undercook?	must I not be undercooking? must you not be undercooking? must he not be undercooking? must we not be undercooking? must you not be undercooking? must they not be undercooking?
Perfect	V-ing perfect
must I not have undercooked? must you not have undercooked? must he not have undercooked? must we not have undercooked? must you not have undercooked? must they not have undercooked?	must I not have been undercooking? must you not have been undercooking? must he not have been undercooking? must we not have been undercooking? must you not have been undercooking? must they not have been undercooking?