can leer
Regular verb: leer - leered- leered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can leer
you can leer
he can leer
we can leer
you can leer
they can leer 	I can be leering
you can be leering
he can be leering
we can be leering
you can be leering
they can be leering	I can have leered
you can have leered
he can have leered
we can have leered
you can have leered
they can have leered	I can have been leering
you can have been leering
he can have been leering
we can have been leering
you can have been leering
they can have been leering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot leer
you cannot leer
he cannot leer
we cannot leer
you cannot leer
they cannot leer 	I cannot be leering
you cannot be leering
he cannot be leering
we cannot be leering
you cannot be leering
they cannot be leering	I cannot have leered
you cannot have leered
he cannot have leered
we cannot have leered
you cannot have leered
they cannot have leered	I cannot have been leering
you cannot have been leering
he cannot have been leering
we cannot have been leering
you cannot have been leering
they cannot have been leering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I leer?
can you leer?
can he leer?
can we leer?
can you leer?
can they leer? 	can I be leering?
can you be leering?
can he be leering?
can we be leering?
can you be leering?
can they be leering? 	can I have leered?
can you have leered?
can he have leered?
can we have leered?
can you have leered?
can they have leered? 	can I have been leering?
can you have been leering?
can he have been leering?
can we have been leering?
can you have been leering?
can they have been leering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not leer?
can you not leer?
can he not leer?
can we not leer?
can you not leer?
can they not leer? 	can I not be leering?
can you not be leering?
can he not be leering?
can we not be leering?
can you not be leering?
can they not be leering? 	can I not have leered?
can you not have leered?
can he not have leered?
can we not have leered?
can you not have leered?
can they not have leered? 	can I not have been leering?
can you not have been leering?
can he not have been leering?
can we not have been leering?
can you not have been leering?
can they not have been leering?