English verb conjugation
COULD PLOT

Regular verb: plot - plotted - plotted

Affirmation

Simple form	V-ing form
I could plot you could plot he could plot we could plot you could plot they could plot	I could be plotting you could be plotting he could be plotting we could be plotting you could be plotting they could be plotting
Perfect	V-ing perfect
I could have plotted you could have plotted he could have plotted we could have plotted you could have plotted they could have plotted	I could have been plotting you could have been plotting he could have been plotting we could have been plotting you could have been plotting they could have been plotting

Negation

Simple form	V-ing form
I couldn't plot you couldn't plot he couldn't plot we couldn't plot you couldn't plot they couldn't plot	I couldn't be plotting you couldn't be plotting he couldn't be plotting we couldn't be plotting you couldn't be plotting they couldn't be plotting
Perfect	V-ing perfect
I couldn't have plotted you couldn't have plotted he couldn't have plotted we couldn't have plotted you couldn't have plotted they couldn't have plotted	I couldn't have been plotting you couldn't have been plotting he couldn't have been plotting we couldn't have been plotting you couldn't have been plotting they couldn't have been plotting

Interrogative form

Simple form	V-ing form
could I plot? could you plot? could he plot? could we plot? could you plot? could they plot?	could I be plotting? could you be plotting? could he be plotting? could we be plotting? could you be plotting? could they be plotting?
Perfect	V-ing perfect
could I have plotted? could you have plotted? could he have plotted? could we have plotted? could you have plotted? could they have plotted?	could I have been plotting? could you have been plotting? could he have been plotting? could we have been plotting? could you have been plotting? could they have been plotting?

Interro-negative form

Simple form	V-ing form
couldn't I plot? couldn't you plot? couldn't he plot? couldn't we plot? couldn't you plot? couldn't they plot?	couldn't I be plotting? couldn't you be plotting? couldn't he be plotting? couldn't we be plotting? couldn't you be plotting? couldn't they be plotting?
Perfect	V-ing perfect
couldn't I have plotted? couldn't you have plotted? couldn't he have plotted? couldn't we have plotted? couldn't you have plotted? couldn't they have plotted?	couldn't I have been plotting? couldn't you have been plotting? couldn't he have been plotting? couldn't we have been plotting? couldn't you have been plotting? couldn't they have been plotting?