English verb conjugation
MUST LEAN

Regular verb: lean - leaned - leaned

Affirmation

Simple form	V-ing form
I must lean you must lean she must lean we must lean you must lean they must lean	I must be leaning you must be leaning she 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 she 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 she 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 must not lean you must not lean she must not lean we must not lean you must not lean they must not lean	I must not be leaning you must not be leaning she must not be leaning we must not be leaning you must not be leaning they must not be leaning
Perfect	V-ing perfect
I must not have leaned you must not have leaned she must not have leaned we must not have leaned you must not have leaned they must not have leaned	I must not have been leaning you must not have been leaning she must not have been leaning we must not have been leaning you must not have been leaning they must not have been leaning

Interrogative form

Simple form	V-ing form
must I lean? must you lean? must she lean? must we lean? must you lean? must they lean?	must I be leaning? must you be leaning? must she 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 she 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 she 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
must I not lean? must you not lean? must she not lean? must we not lean? must you not lean? must they not lean?	must I not be leaning? must you not be leaning? must she not be leaning? must we not be leaning? must you not be leaning? must they not be leaning?
Perfect	V-ing perfect
must I not have leaned? must you not have leaned? must she not have leaned? must we not have leaned? must you not have leaned? must they not have leaned?	must I not have been leaning? must you not have been leaning? must she not have been leaning? must we not have been leaning? must you not have been leaning? must they not have been leaning?