I could journal you could journal he could journal we could journal you could journal they could journal
V-ing form
I could be journaling you could be journaling he could be journaling we could be journaling you could be journaling they could be journaling
Perfect
I could have journaled you could have journaled he could have journaled we could have journaled you could have journaled they could have journaled
V-ing perfect
I could have been journaling you could have been journaling he could have been journaling we could have been journaling you could have been journaling they could have been journaling
Negation
Simple form
I could not journal you could not journal he could not journal we could not journal you could not journal they could not journal
V-ing form
I could not be journaling you could not be journaling he could not be journaling we could not be journaling you could not be journaling they could not be journaling
Perfect
I could not have journaled you could not have journaled he could not have journaled we could not have journaled you could not have journaled they could not have journaled
V-ing perfect
I could not have been journaling you could not have been journaling he could not have been journaling we could not have been journaling you could not have been journaling they could not have been journaling
Interrogative form
Simple form
could I journal? could you journal? could he journal? could we journal? could you journal? could they journal?
V-ing form
could I be journaling? could you be journaling? could he be journaling? could we be journaling? could you be journaling? could they be journaling?
Perfect
could I have journaled? could you have journaled? could he have journaled? could we have journaled? could you have journaled? could they have journaled?
V-ing perfect
could I have been journaling? could you have been journaling? could he have been journaling? could we have been journaling? could you have been journaling? could they have been journaling?
Interro-negative form
Simple form
could I not journal? could you not journal? could he not journal? could we not journal? could you not journal? could they not journal?
V-ing form
could I not be journaling? could you not be journaling? could he not be journaling? could we not be journaling? could you not be journaling? could they not be journaling?
Perfect
could I not have journaled? could you not have journaled? could he not have journaled? could we not have journaled? could you not have journaled? could they not have journaled?
V-ing perfect
could I not have been journaling? could you not have been journaling? could he not have been journaling? could we not have been journaling? could you not have been journaling? could they not have been journaling?