English verb conjugation
MUST CURSE

Regular verb: curse - cursed - cursed

Affirmation

Simple form	V-ing form
I must curse you must curse he must curse we must curse you must curse they must curse	I must be cursing you must be cursing he must be cursing we must be cursing you must be cursing they must be cursing
Perfect	V-ing perfect
I must have cursed you must have cursed he must have cursed we must have cursed you must have cursed they must have cursed	I must have been cursing you must have been cursing he must have been cursing we must have been cursing you must have been cursing they must have been cursing

Negation

Simple form	V-ing form
I mustn't curse you mustn't curse he mustn't curse we mustn't curse you mustn't curse they mustn't curse	I mustn't be cursing you mustn't be cursing he mustn't be cursing we mustn't be cursing you mustn't be cursing they mustn't be cursing
Perfect	V-ing perfect
I mustn't have cursed you mustn't have cursed he mustn't have cursed we mustn't have cursed you mustn't have cursed they mustn't have cursed	I mustn't have been cursing you mustn't have been cursing he mustn't have been cursing we mustn't have been cursing you mustn't have been cursing they mustn't have been cursing

Interrogative form

Simple form	V-ing form
must I curse? must you curse? must he curse? must we curse? must you curse? must they curse?	must I be cursing? must you be cursing? must he be cursing? must we be cursing? must you be cursing? must they be cursing?
Perfect	V-ing perfect
must I have cursed? must you have cursed? must he have cursed? must we have cursed? must you have cursed? must they have cursed?	must I have been cursing? must you have been cursing? must he have been cursing? must we have been cursing? must you have been cursing? must they have been cursing?

Interro-negative form

Simple form	V-ing form
mustn't I curse? mustn't you curse? mustn't he curse? mustn't we curse? mustn't you curse? mustn't they curse?	mustn't I be cursing? mustn't you be cursing? mustn't he be cursing? mustn't we be cursing? mustn't you be cursing? mustn't they be cursing?
Perfect	V-ing perfect
mustn't I have cursed? mustn't you have cursed? mustn't he have cursed? mustn't we have cursed? mustn't you have cursed? mustn't they have cursed?	mustn't I have been cursing? mustn't you have been cursing? mustn't he have been cursing? mustn't we have been cursing? mustn't you have been cursing? mustn't they have been cursing?