I could personalize you could personalize she could personalize we could personalize you could personalize they could personalize
V-ing form
I could be personalizing you could be personalizing she could be personalizing we could be personalizing you could be personalizing they could be personalizing
Perfect
I could have personalized you could have personalized she could have personalized we could have personalized you could have personalized they could have personalized
V-ing perfect
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
Simple form
I could not personalize you could not personalize she could not personalize we could not personalize you could not personalize they could not personalize
V-ing form
I could not be personalizing you could not be personalizing she could not be personalizing we could not be personalizing you could not be personalizing they could not be personalizing
Perfect
I could not have personalized you could not have personalized she could not have personalized we could not have personalized you could not have personalized they could not have personalized
V-ing perfect
I could not have been personalizing you could not have been personalizing she could not have been personalizing we could not have been personalizing you could not have been personalizing they could not have been personalizing
Interrogative form
Simple form
could I personalize? could you personalize? could she personalize? could we personalize? could you personalize? could they personalize?
V-ing form
could I be personalizing? could you be personalizing? could she be personalizing? could we be personalizing? could you be personalizing? could they be personalizing?
Perfect
could I have personalized? could you have personalized? could she have personalized? could we have personalized? could you have personalized? could they have personalized?
V-ing perfect
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
Simple form
could I not personalize? could you not personalize? could she not personalize? could we not personalize? could you not personalize? could they not personalize?
V-ing form
could I not be personalizing? could you not be personalizing? could she not be personalizing? could we not be personalizing? could you not be personalizing? could they not be personalizing?
Perfect
could I not have personalized? could you not have personalized? could she not have personalized? could we not have personalized? could you not have personalized? could they not have personalized?
V-ing perfect
could I not have been personalizing? could you not have been personalizing? could she not have been personalizing? could we not have been personalizing? could you not have been personalizing? could they not have been personalizing?