could liberalize
Regular verb: liberalize - liberalized- liberalized

Affirmation 	
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I could liberalize
you could liberalize
he could liberalize
we could liberalize
you could liberalize
they could liberalize 	I could be liberalizing
you could be liberalizing
he could be liberalizing
we could be liberalizing
you could be liberalizing
they could be liberalizing	I could have liberalized
you could have liberalized
he could have liberalized
we could have liberalized
you could have liberalized
they could have liberalized	I could have been liberalizing
you could have been liberalizing
he could have been liberalizing
we could have been liberalizing
you could have been liberalizing
they could have been liberalizing	

Negation 	
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I couldn't liberalize
you couldn't liberalize
he couldn't liberalize
we couldn't liberalize
you couldn't liberalize
they couldn't liberalize 	I couldn't be liberalizing
you couldn't be liberalizing
he couldn't be liberalizing
we couldn't be liberalizing
you couldn't be liberalizing
they couldn't be liberalizing	I couldn't have liberalized
you couldn't have liberalized
he couldn't have liberalized
we couldn't have liberalized
you couldn't have liberalized
they couldn't have liberalized	I couldn't have been liberalizing
you couldn't have been liberalizing
he couldn't have been liberalizing
we couldn't have been liberalizing
you couldn't have been liberalizing
they couldn't have been liberalizing	

Interrogative form 	
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could I liberalize?
could you liberalize?
could he liberalize?
could we liberalize?
could you liberalize?
could they liberalize? 	could I be liberalizing?
could you be liberalizing?
could he be liberalizing?
could we be liberalizing?
could you be liberalizing?
could they be liberalizing? 	could I have liberalized?
could you have liberalized?
could he have liberalized?
could we have liberalized?
could you have liberalized?
could they have liberalized? 	could I have been liberalizing?
could you have been liberalizing?
could he have been liberalizing?
could we have been liberalizing?
could you have been liberalizing?
could they have been liberalizing? 	

Interro-negative form 	
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couldn't I liberalize?
couldn't you liberalize?
couldn't he liberalize?
couldn't we liberalize?
couldn't you liberalize?
couldn't they liberalize? 	couldn't I be liberalizing?
couldn't you be liberalizing?
couldn't he be liberalizing?
couldn't we be liberalizing?
couldn't you be liberalizing?
couldn't they be liberalizing? 	couldn't I have liberalized?
couldn't you have liberalized?
couldn't he have liberalized?
couldn't we have liberalized?
couldn't you have liberalized?
couldn't they have liberalized? 	couldn't I have been liberalizing?
couldn't you have been liberalizing?
couldn't he have been liberalizing?
couldn't we have been liberalizing?
couldn't you have been liberalizing?
couldn't they have been liberalizing?