can lean
Regular verb: lean - leaned- leaned

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