I could plot you could plot she could plot we could plot you could plot they could plot
V-ing form
I could be plotting you could be plotting she could be plotting we could be plotting you could be plotting they could be plotting
Perfect
I could have plotted you could have plotted she could have plotted we could have plotted you could have plotted they could have plotted
V-ing perfect
I could have been plotting you could have been plotting she could have been plotting we could have been plotting you could have been plotting they could have been plotting
Negation
Simple form
I could not plot you could not plot she could not plot we could not plot you could not plot they could not plot
V-ing form
I could not be plotting you could not be plotting she could not be plotting we could not be plotting you could not be plotting they could not be plotting
Perfect
I could not have plotted you could not have plotted she could not have plotted we could not have plotted you could not have plotted they could not have plotted
V-ing perfect
I could not have been plotting you could not have been plotting she could not have been plotting we could not have been plotting you could not have been plotting they could not have been plotting
Interrogative form
Simple form
could I plot? could you plot? could she plot? could we plot? could you plot? could they plot?
V-ing form
could I be plotting? could you be plotting? could she be plotting? could we be plotting? could you be plotting? could they be plotting?
Perfect
could I have plotted? could you have plotted? could she have plotted? could we have plotted? could you have plotted? could they have plotted?
V-ing perfect
could I have been plotting? could you have been plotting? could she have been plotting? could we have been plotting? could you have been plotting? could they have been plotting?
Interro-negative form
Simple form
could I not plot? could you not plot? could she not plot? could we not plot? could you not plot? could they not plot?
V-ing form
could I not be plotting? could you not be plotting? could she not be plotting? could we not be plotting? could you not be plotting? could they not be plotting?
Perfect
could I not have plotted? could you not have plotted? could she not have plotted? could we not have plotted? could you not have plotted? could they not have plotted?
V-ing perfect
could I not have been plotting? could you not have been plotting? could she not have been plotting? could we not have been plotting? could you not have been plotting? could they not have been plotting?