English verb conjugation
COULD LEAN

Regular verb: lean - leaned - leaned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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