I could preadapt you could preadapt he could preadapt we could preadapt you could preadapt they could preadapt
V-ing form
I could be preadapting you could be preadapting he could be preadapting we could be preadapting you could be preadapting they could be preadapting
Perfect
I could have preadapted you could have preadapted he could have preadapted we could have preadapted you could have preadapted they could have preadapted
V-ing perfect
I could have been preadapting you could have been preadapting he could have been preadapting we could have been preadapting you could have been preadapting they could have been preadapting
Negation
Simple form
I could not preadapt you could not preadapt he could not preadapt we could not preadapt you could not preadapt they could not preadapt
V-ing form
I could not be preadapting you could not be preadapting he could not be preadapting we could not be preadapting you could not be preadapting they could not be preadapting
Perfect
I could not have preadapted you could not have preadapted he could not have preadapted we could not have preadapted you could not have preadapted they could not have preadapted
V-ing perfect
I could not have been preadapting you could not have been preadapting he could not have been preadapting we could not have been preadapting you could not have been preadapting they could not have been preadapting
Interrogative form
Simple form
could I preadapt? could you preadapt? could he preadapt? could we preadapt? could you preadapt? could they preadapt?
V-ing form
could I be preadapting? could you be preadapting? could he be preadapting? could we be preadapting? could you be preadapting? could they be preadapting?
Perfect
could I have preadapted? could you have preadapted? could he have preadapted? could we have preadapted? could you have preadapted? could they have preadapted?
V-ing perfect
could I have been preadapting? could you have been preadapting? could he have been preadapting? could we have been preadapting? could you have been preadapting? could they have been preadapting?
Interro-negative form
Simple form
could I not preadapt? could you not preadapt? could he not preadapt? could we not preadapt? could you not preadapt? could they not preadapt?
V-ing form
could I not be preadapting? could you not be preadapting? could he not be preadapting? could we not be preadapting? could you not be preadapting? could they not be preadapting?
Perfect
could I not have preadapted? could you not have preadapted? could he not have preadapted? could we not have preadapted? could you not have preadapted? could they not have preadapted?
V-ing perfect
could I not have been preadapting? could you not have been preadapting? could he not have been preadapting? could we not have been preadapting? could you not have been preadapting? could they not have been preadapting?