English verb conjugation
MUST WHALE

Regular verb: whale - whaled - whaled

Affirmation

Simple form	V-ing form
I must whale you must whale he must whale we must whale you must whale they must whale	I must be whaling you must be whaling he must be whaling we must be whaling you must be whaling they must be whaling
Perfect	V-ing perfect
I must have whaled you must have whaled he must have whaled we must have whaled you must have whaled they must have whaled	I must have been whaling you must have been whaling he must have been whaling we must have been whaling you must have been whaling they must have been whaling

Negation

Simple form	V-ing form
I mustn't whale you mustn't whale he mustn't whale we mustn't whale you mustn't whale they mustn't whale	I mustn't be whaling you mustn't be whaling he mustn't be whaling we mustn't be whaling you mustn't be whaling they mustn't be whaling
Perfect	V-ing perfect
I mustn't have whaled you mustn't have whaled he mustn't have whaled we mustn't have whaled you mustn't have whaled they mustn't have whaled	I mustn't have been whaling you mustn't have been whaling he mustn't have been whaling we mustn't have been whaling you mustn't have been whaling they mustn't have been whaling

Interrogative form

Simple form	V-ing form
must I whale? must you whale? must he whale? must we whale? must you whale? must they whale?	must I be whaling? must you be whaling? must he be whaling? must we be whaling? must you be whaling? must they be whaling?
Perfect	V-ing perfect
must I have whaled? must you have whaled? must he have whaled? must we have whaled? must you have whaled? must they have whaled?	must I have been whaling? must you have been whaling? must he have been whaling? must we have been whaling? must you have been whaling? must they have been whaling?

Interro-negative form

Simple form	V-ing form
mustn't I whale? mustn't you whale? mustn't he whale? mustn't we whale? mustn't you whale? mustn't they whale?	mustn't I be whaling? mustn't you be whaling? mustn't he be whaling? mustn't we be whaling? mustn't you be whaling? mustn't they be whaling?
Perfect	V-ing perfect
mustn't I have whaled? mustn't you have whaled? mustn't he have whaled? mustn't we have whaled? mustn't you have whaled? mustn't they have whaled?	mustn't I have been whaling? mustn't you have been whaling? mustn't he have been whaling? mustn't we have been whaling? mustn't you have been whaling? mustn't they have been whaling?