could leer
Regular verb: leer - leered- leered

Affirmation 	
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I could leer
you could leer
she could leer
we could leer
you could leer
they could leer 	I could be leering
you could be leering
she could be leering
we could be leering
you could be leering
they could be leering	I could have leered
you could have leered
she could have leered
we could have leered
you could have leered
they could have leered	I could have been leering
you could have been leering
she could have been leering
we could have been leering
you could have been leering
they could have been leering	

Negation 	
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I couldn't leer
you couldn't leer
she couldn't leer
we couldn't leer
you couldn't leer
they couldn't leer 	I couldn't be leering
you couldn't be leering
she couldn't be leering
we couldn't be leering
you couldn't be leering
they couldn't be leering	I couldn't have leered
you couldn't have leered
she couldn't have leered
we couldn't have leered
you couldn't have leered
they couldn't have leered	I couldn't have been leering
you couldn't have been leering
she couldn't have been leering
we couldn't have been leering
you couldn't have been leering
they couldn't have been leering	

Interrogative form 	
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could I leer?
could you leer?
could she leer?
could we leer?
could you leer?
could they leer? 	could I be leering?
could you be leering?
could she be leering?
could we be leering?
could you be leering?
could they be leering? 	could I have leered?
could you have leered?
could she have leered?
could we have leered?
could you have leered?
could they have leered? 	could I have been leering?
could you have been leering?
could she have been leering?
could we have been leering?
could you have been leering?
could they have been leering? 	

Interro-negative form 	
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couldn't I leer?
couldn't you leer?
couldn't she leer?
couldn't we leer?
couldn't you leer?
couldn't they leer? 	couldn't I be leering?
couldn't you be leering?
couldn't she be leering?
couldn't we be leering?
couldn't you be leering?
couldn't they be leering? 	couldn't I have leered?
couldn't you have leered?
couldn't she have leered?
couldn't we have leered?
couldn't you have leered?
couldn't they have leered? 	couldn't I have been leering?
couldn't you have been leering?
couldn't she have been leering?
couldn't we have been leering?
couldn't you have been leering?
couldn't they have been leering?