English verb conjugation
MUST COAL

Regular verb: coal - coaled - coaled

Affirmation

Simple form	V-ing form
I must coal you must coal he must coal we must coal you must coal they must coal	I must be coaling you must be coaling he must be coaling we must be coaling you must be coaling they must be coaling
Perfect	V-ing perfect
I must have coaled you must have coaled he must have coaled we must have coaled you must have coaled they must have coaled	I must have been coaling you must have been coaling he must have been coaling we must have been coaling you must have been coaling they must have been coaling

Negation

Simple form	V-ing form
I mustn't coal you mustn't coal he mustn't coal we mustn't coal you mustn't coal they mustn't coal	I mustn't be coaling you mustn't be coaling he mustn't be coaling we mustn't be coaling you mustn't be coaling they mustn't be coaling
Perfect	V-ing perfect
I mustn't have coaled you mustn't have coaled he mustn't have coaled we mustn't have coaled you mustn't have coaled they mustn't have coaled	I mustn't have been coaling you mustn't have been coaling he mustn't have been coaling we mustn't have been coaling you mustn't have been coaling they mustn't have been coaling

Interrogative form

Simple form	V-ing form
must I coal? must you coal? must he coal? must we coal? must you coal? must they coal?	must I be coaling? must you be coaling? must he be coaling? must we be coaling? must you be coaling? must they be coaling?
Perfect	V-ing perfect
must I have coaled? must you have coaled? must he have coaled? must we have coaled? must you have coaled? must they have coaled?	must I have been coaling? must you have been coaling? must he have been coaling? must we have been coaling? must you have been coaling? must they have been coaling?

Interro-negative form

Simple form	V-ing form
mustn't I coal? mustn't you coal? mustn't he coal? mustn't we coal? mustn't you coal? mustn't they coal?	mustn't I be coaling? mustn't you be coaling? mustn't he be coaling? mustn't we be coaling? mustn't you be coaling? mustn't they be coaling?
Perfect	V-ing perfect
mustn't I have coaled? mustn't you have coaled? mustn't he have coaled? mustn't we have coaled? mustn't you have coaled? mustn't they have coaled?	mustn't I have been coaling? mustn't you have been coaling? mustn't he have been coaling? mustn't we have been coaling? mustn't you have been coaling? mustn't they have been coaling?