English verb conjugation
MUST WHACK

Regular verb: whack - whacked - whacked

Affirmation

Simple form	V-ing form
I must whack you must whack he must whack we must whack you must whack they must whack	I must be whacking you must be whacking he must be whacking we must be whacking you must be whacking they must be whacking
Perfect	V-ing perfect
I must have whacked you must have whacked he must have whacked we must have whacked you must have whacked they must have whacked	I must have been whacking you must have been whacking he must have been whacking we must have been whacking you must have been whacking they must have been whacking

Negation

Simple form	V-ing form
I mustn't whack you mustn't whack he mustn't whack we mustn't whack you mustn't whack they mustn't whack	I mustn't be whacking you mustn't be whacking he mustn't be whacking we mustn't be whacking you mustn't be whacking they mustn't be whacking
Perfect	V-ing perfect
I mustn't have whacked you mustn't have whacked he mustn't have whacked we mustn't have whacked you mustn't have whacked they mustn't have whacked	I mustn't have been whacking you mustn't have been whacking he mustn't have been whacking we mustn't have been whacking you mustn't have been whacking they mustn't have been whacking

Interrogative form

Simple form	V-ing form
must I whack? must you whack? must he whack? must we whack? must you whack? must they whack?	must I be whacking? must you be whacking? must he be whacking? must we be whacking? must you be whacking? must they be whacking?
Perfect	V-ing perfect
must I have whacked? must you have whacked? must he have whacked? must we have whacked? must you have whacked? must they have whacked?	must I have been whacking? must you have been whacking? must he have been whacking? must we have been whacking? must you have been whacking? must they have been whacking?

Interro-negative form

Simple form	V-ing form
mustn't I whack? mustn't you whack? mustn't he whack? mustn't we whack? mustn't you whack? mustn't they whack?	mustn't I be whacking? mustn't you be whacking? mustn't he be whacking? mustn't we be whacking? mustn't you be whacking? mustn't they be whacking?
Perfect	V-ing perfect
mustn't I have whacked? mustn't you have whacked? mustn't he have whacked? mustn't we have whacked? mustn't you have whacked? mustn't they have whacked?	mustn't I have been whacking? mustn't you have been whacking? mustn't he have been whacking? mustn't we have been whacking? mustn't you have been whacking? mustn't they have been whacking?