English verb conjugation
CAN LEAN

Regular verb: lean - leaned - leaned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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