could personalize
Regular verb: personalize - personalized- personalized

Affirmation 	
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I could personalize
you could personalize
she could personalize
we could personalize
you could personalize
they could personalize 	I could be personalizing
you could be personalizing
she could be personalizing
we could be personalizing
you could be personalizing
they could be personalizing	I could have personalized
you could have personalized
she could have personalized
we could have personalized
you could have personalized
they could have personalized	I could have been personalizing
you could have been personalizing
she could have been personalizing
we could have been personalizing
you could have been personalizing
they could have been personalizing	

Negation 	
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I couldn't personalize
you couldn't personalize
she couldn't personalize
we couldn't personalize
you couldn't personalize
they couldn't personalize 	I couldn't be personalizing
you couldn't be personalizing
she couldn't be personalizing
we couldn't be personalizing
you couldn't be personalizing
they couldn't be personalizing	I couldn't have personalized
you couldn't have personalized
she couldn't have personalized
we couldn't have personalized
you couldn't have personalized
they couldn't have personalized	I couldn't have been personalizing
you couldn't have been personalizing
she couldn't have been personalizing
we couldn't have been personalizing
you couldn't have been personalizing
they couldn't have been personalizing	

Interrogative form 	
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could I personalize?
could you personalize?
could she personalize?
could we personalize?
could you personalize?
could they personalize? 	could I be personalizing?
could you be personalizing?
could she be personalizing?
could we be personalizing?
could you be personalizing?
could they be personalizing? 	could I have personalized?
could you have personalized?
could she have personalized?
could we have personalized?
could you have personalized?
could they have personalized? 	could I have been personalizing?
could you have been personalizing?
could she have been personalizing?
could we have been personalizing?
could you have been personalizing?
could they have been personalizing? 	

Interro-negative form 	
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couldn't I personalize?
couldn't you personalize?
couldn't she personalize?
couldn't we personalize?
couldn't you personalize?
couldn't they personalize? 	couldn't I be personalizing?
couldn't you be personalizing?
couldn't she be personalizing?
couldn't we be personalizing?
couldn't you be personalizing?
couldn't they be personalizing? 	couldn't I have personalized?
couldn't you have personalized?
couldn't she have personalized?
couldn't we have personalized?
couldn't you have personalized?
couldn't they have personalized? 	couldn't I have been personalizing?
couldn't you have been personalizing?
couldn't she have been personalizing?
couldn't we have been personalizing?
couldn't you have been personalizing?
couldn't they have been personalizing?