I could embellish you could embellish he could embellish we could embellish you could embellish they could embellish
V-ing form
I could be embellishing you could be embellishing he could be embellishing we could be embellishing you could be embellishing they could be embellishing
Perfect
I could have embellished you could have embellished he could have embellished we could have embellished you could have embellished they could have embellished
V-ing perfect
I could have been embellishing you could have been embellishing he could have been embellishing we could have been embellishing you could have been embellishing they could have been embellishing
Negation
Simple form
I could not embellish you could not embellish he could not embellish we could not embellish you could not embellish they could not embellish
V-ing form
I could not be embellishing you could not be embellishing he could not be embellishing we could not be embellishing you could not be embellishing they could not be embellishing
Perfect
I could not have embellished you could not have embellished he could not have embellished we could not have embellished you could not have embellished they could not have embellished
V-ing perfect
I could not have been embellishing you could not have been embellishing he could not have been embellishing we could not have been embellishing you could not have been embellishing they could not have been embellishing
Interrogative form
Simple form
could I embellish? could you embellish? could he embellish? could we embellish? could you embellish? could they embellish?
V-ing form
could I be embellishing? could you be embellishing? could he be embellishing? could we be embellishing? could you be embellishing? could they be embellishing?
Perfect
could I have embellished? could you have embellished? could he have embellished? could we have embellished? could you have embellished? could they have embellished?
V-ing perfect
could I have been embellishing? could you have been embellishing? could he have been embellishing? could we have been embellishing? could you have been embellishing? could they have been embellishing?
Interro-negative form
Simple form
could I not embellish? could you not embellish? could he not embellish? could we not embellish? could you not embellish? could they not embellish?
V-ing form
could I not be embellishing? could you not be embellishing? could he not be embellishing? could we not be embellishing? could you not be embellishing? could they not be embellishing?
Perfect
could I not have embellished? could you not have embellished? could he not have embellished? could we not have embellished? could you not have embellished? could they not have embellished?
V-ing perfect
could I not have been embellishing? could you not have been embellishing? could he not have been embellishing? could we not have been embellishing? could you not have been embellishing? could they not have been embellishing?