English verb conjugation
MUST KEYPUNCH

Regular verb: keypunch - keypunched - keypunched

Affirmation

Simple form	V-ing form
I must keypunch you must keypunch he must keypunch we must keypunch you must keypunch they must keypunch	I must be keypunching you must be keypunching he must be keypunching we must be keypunching you must be keypunching they must be keypunching
Perfect	V-ing perfect
I must have keypunched you must have keypunched he must have keypunched we must have keypunched you must have keypunched they must have keypunched	I must have been keypunching you must have been keypunching he must have been keypunching we must have been keypunching you must have been keypunching they must have been keypunching

Negation

Simple form	V-ing form
I must not keypunch you must not keypunch he must not keypunch we must not keypunch you must not keypunch they must not keypunch	I must not be keypunching you must not be keypunching he must not be keypunching we must not be keypunching you must not be keypunching they must not be keypunching
Perfect	V-ing perfect
I must not have keypunched you must not have keypunched he must not have keypunched we must not have keypunched you must not have keypunched they must not have keypunched	I must not have been keypunching you must not have been keypunching he must not have been keypunching we must not have been keypunching you must not have been keypunching they must not have been keypunching

Interrogative form

Simple form	V-ing form
must I keypunch? must you keypunch? must he keypunch? must we keypunch? must you keypunch? must they keypunch?	must I be keypunching? must you be keypunching? must he be keypunching? must we be keypunching? must you be keypunching? must they be keypunching?
Perfect	V-ing perfect
must I have keypunched? must you have keypunched? must he have keypunched? must we have keypunched? must you have keypunched? must they have keypunched?	must I have been keypunching? must you have been keypunching? must he have been keypunching? must we have been keypunching? must you have been keypunching? must they have been keypunching?

Interro-negative form

Simple form	V-ing form
must I not keypunch? must you not keypunch? must he not keypunch? must we not keypunch? must you not keypunch? must they not keypunch?	must I not be keypunching? must you not be keypunching? must he not be keypunching? must we not be keypunching? must you not be keypunching? must they not be keypunching?
Perfect	V-ing perfect
must I not have keypunched? must you not have keypunched? must he not have keypunched? must we not have keypunched? must you not have keypunched? must they not have keypunched?	must I not have been keypunching? must you not have been keypunching? must he not have been keypunching? must we not have been keypunching? must you not have been keypunching? must they not have been keypunching?