I could conceptualize you could conceptualize he could conceptualize we could conceptualize you could conceptualize they could conceptualize
V-ing form
I could be conceptualizing you could be conceptualizing he could be conceptualizing we could be conceptualizing you could be conceptualizing they could be conceptualizing
Perfect
I could have conceptualized you could have conceptualized he could have conceptualized we could have conceptualized you could have conceptualized they could have conceptualized
V-ing perfect
I could have been conceptualizing you could have been conceptualizing he could have been conceptualizing we could have been conceptualizing you could have been conceptualizing they could have been conceptualizing
Negation
Simple form
I could not conceptualize you could not conceptualize he could not conceptualize we could not conceptualize you could not conceptualize they could not conceptualize
V-ing form
I could not be conceptualizing you could not be conceptualizing he could not be conceptualizing we could not be conceptualizing you could not be conceptualizing they could not be conceptualizing
Perfect
I could not have conceptualized you could not have conceptualized he could not have conceptualized we could not have conceptualized you could not have conceptualized they could not have conceptualized
V-ing perfect
I could not have been conceptualizing you could not have been conceptualizing he could not have been conceptualizing we could not have been conceptualizing you could not have been conceptualizing they could not have been conceptualizing
Interrogative form
Simple form
could I conceptualize? could you conceptualize? could he conceptualize? could we conceptualize? could you conceptualize? could they conceptualize?
V-ing form
could I be conceptualizing? could you be conceptualizing? could he be conceptualizing? could we be conceptualizing? could you be conceptualizing? could they be conceptualizing?
Perfect
could I have conceptualized? could you have conceptualized? could he have conceptualized? could we have conceptualized? could you have conceptualized? could they have conceptualized?
V-ing perfect
could I have been conceptualizing? could you have been conceptualizing? could he have been conceptualizing? could we have been conceptualizing? could you have been conceptualizing? could they have been conceptualizing?
Interro-negative form
Simple form
could I not conceptualize? could you not conceptualize? could he not conceptualize? could we not conceptualize? could you not conceptualize? could they not conceptualize?
V-ing form
could I not be conceptualizing? could you not be conceptualizing? could he not be conceptualizing? could we not be conceptualizing? could you not be conceptualizing? could they not be conceptualizing?
Perfect
could I not have conceptualized? could you not have conceptualized? could he not have conceptualized? could we not have conceptualized? could you not have conceptualized? could they not have conceptualized?
V-ing perfect
could I not have been conceptualizing? could you not have been conceptualizing? could he not have been conceptualizing? could we not have been conceptualizing? could you not have been conceptualizing? could they not have been conceptualizing?