English verb conjugation
MUST BELLYACHE

Regular verb: bellyache - bellyached - bellyached

Affirmation

Simple form	V-ing form
I must bellyache you must bellyache he must bellyache we must bellyache you must bellyache they must bellyache	I must be bellyaching you must be bellyaching he must be bellyaching we must be bellyaching you must be bellyaching they must be bellyaching
Perfect	V-ing perfect
I must have bellyached you must have bellyached he must have bellyached we must have bellyached you must have bellyached they must have bellyached	I must have been bellyaching you must have been bellyaching he must have been bellyaching we must have been bellyaching you must have been bellyaching they must have been bellyaching

Negation

Simple form	V-ing form
I must not bellyache you must not bellyache he must not bellyache we must not bellyache you must not bellyache they must not bellyache	I must not be bellyaching you must not be bellyaching he must not be bellyaching we must not be bellyaching you must not be bellyaching they must not be bellyaching
Perfect	V-ing perfect
I must not have bellyached you must not have bellyached he must not have bellyached we must not have bellyached you must not have bellyached they must not have bellyached	I must not have been bellyaching you must not have been bellyaching he must not have been bellyaching we must not have been bellyaching you must not have been bellyaching they must not have been bellyaching

Interrogative form

Simple form	V-ing form
must I bellyache? must you bellyache? must he bellyache? must we bellyache? must you bellyache? must they bellyache?	must I be bellyaching? must you be bellyaching? must he be bellyaching? must we be bellyaching? must you be bellyaching? must they be bellyaching?
Perfect	V-ing perfect
must I have bellyached? must you have bellyached? must he have bellyached? must we have bellyached? must you have bellyached? must they have bellyached?	must I have been bellyaching? must you have been bellyaching? must he have been bellyaching? must we have been bellyaching? must you have been bellyaching? must they have been bellyaching?

Interro-negative form

Simple form	V-ing form
must I not bellyache? must you not bellyache? must he not bellyache? must we not bellyache? must you not bellyache? must they not bellyache?	must I not be bellyaching? must you not be bellyaching? must he not be bellyaching? must we not be bellyaching? must you not be bellyaching? must they not be bellyaching?
Perfect	V-ing perfect
must I not have bellyached? must you not have bellyached? must he not have bellyached? must we not have bellyached? must you not have bellyached? must they not have bellyached?	must I not have been bellyaching? must you not have been bellyaching? must he not have been bellyaching? must we not have been bellyaching? must you not have been bellyaching? must they not have been bellyaching?