English verb conjugation
MUST QUIRT

Regular verb: quirt - quirted - quirted

Affirmation

Simple form	V-ing form
I must quirt you must quirt he must quirt we must quirt you must quirt they must quirt	I must be quirting you must be quirting he must be quirting we must be quirting you must be quirting they must be quirting
Perfect	V-ing perfect
I must have quirted you must have quirted he must have quirted we must have quirted you must have quirted they must have quirted	I must have been quirting you must have been quirting he must have been quirting we must have been quirting you must have been quirting they must have been quirting

Negation

Simple form	V-ing form
I mustn't quirt you mustn't quirt he mustn't quirt we mustn't quirt you mustn't quirt they mustn't quirt	I mustn't be quirting you mustn't be quirting he mustn't be quirting we mustn't be quirting you mustn't be quirting they mustn't be quirting
Perfect	V-ing perfect
I mustn't have quirted you mustn't have quirted he mustn't have quirted we mustn't have quirted you mustn't have quirted they mustn't have quirted	I mustn't have been quirting you mustn't have been quirting he mustn't have been quirting we mustn't have been quirting you mustn't have been quirting they mustn't have been quirting

Interrogative form

Simple form	V-ing form
must I quirt? must you quirt? must he quirt? must we quirt? must you quirt? must they quirt?	must I be quirting? must you be quirting? must he be quirting? must we be quirting? must you be quirting? must they be quirting?
Perfect	V-ing perfect
must I have quirted? must you have quirted? must he have quirted? must we have quirted? must you have quirted? must they have quirted?	must I have been quirting? must you have been quirting? must he have been quirting? must we have been quirting? must you have been quirting? must they have been quirting?

Interro-negative form

Simple form	V-ing form
mustn't I quirt? mustn't you quirt? mustn't he quirt? mustn't we quirt? mustn't you quirt? mustn't they quirt?	mustn't I be quirting? mustn't you be quirting? mustn't he be quirting? mustn't we be quirting? mustn't you be quirting? mustn't they be quirting?
Perfect	V-ing perfect
mustn't I have quirted? mustn't you have quirted? mustn't he have quirted? mustn't we have quirted? mustn't you have quirted? mustn't they have quirted?	mustn't I have been quirting? mustn't you have been quirting? mustn't he have been quirting? mustn't we have been quirting? mustn't you have been quirting? mustn't they have been quirting?