English verb conjugation
MUST LEAN

Regular verb: lean - leaned - leaned

Affirmation

Simple form	V-ing form
I must lean you must lean he must lean we must lean you must lean they must lean	I must be leaning you must be leaning he must be leaning we must be leaning you must be leaning they must be leaning
Perfect	V-ing perfect
I must have leaned you must have leaned he must have leaned we must have leaned you must have leaned they must have leaned	I must have been leaning you must have been leaning he must have been leaning we must have been leaning you must have been leaning they must have been leaning

Negation

Simple form	V-ing form
I mustn't lean you mustn't lean he mustn't lean we mustn't lean you mustn't lean they mustn't lean	I mustn't be leaning you mustn't be leaning he mustn't be leaning we mustn't be leaning you mustn't be leaning they mustn't be leaning
Perfect	V-ing perfect
I mustn't have leaned you mustn't have leaned he mustn't have leaned we mustn't have leaned you mustn't have leaned they mustn't have leaned	I mustn't have been leaning you mustn't have been leaning he mustn't have been leaning we mustn't have been leaning you mustn't have been leaning they mustn't have been leaning

Interrogative form

Simple form	V-ing form
must I lean? must you lean? must he lean? must we lean? must you lean? must they lean?	must I be leaning? must you be leaning? must he be leaning? must we be leaning? must you be leaning? must they be leaning?
Perfect	V-ing perfect
must I have leaned? must you have leaned? must he have leaned? must we have leaned? must you have leaned? must they have leaned?	must I have been leaning? must you have been leaning? must he have been leaning? must we have been leaning? must you have been leaning? must they have been leaning?

Interro-negative form

Simple form	V-ing form
mustn't I lean? mustn't you lean? mustn't he lean? mustn't we lean? mustn't you lean? mustn't they lean?	mustn't I be leaning? mustn't you be leaning? mustn't he be leaning? mustn't we be leaning? mustn't you be leaning? mustn't they be leaning?
Perfect	V-ing perfect
mustn't I have leaned? mustn't you have leaned? mustn't he have leaned? mustn't we have leaned? mustn't you have leaned? mustn't they have leaned?	mustn't I have been leaning? mustn't you have been leaning? mustn't he have been leaning? mustn't we have been leaning? mustn't you have been leaning? mustn't they have been leaning?