English verb conjugation
COULD CHART

Regular verb: chart - charted - charted

Affirmation

Simple form	V-ing form
I could chart you could chart she could chart we could chart you could chart they could chart	I could be charting you could be charting she could be charting we could be charting you could be charting they could be charting
Perfect	V-ing perfect
I could have charted you could have charted she could have charted we could have charted you could have charted they could have charted	I could have been charting you could have been charting she could have been charting we could have been charting you could have been charting they could have been charting

Negation

Simple form	V-ing form
I couldn't chart you couldn't chart she couldn't chart we couldn't chart you couldn't chart they couldn't chart	I couldn't be charting you couldn't be charting she couldn't be charting we couldn't be charting you couldn't be charting they couldn't be charting
Perfect	V-ing perfect
I couldn't have charted you couldn't have charted she couldn't have charted we couldn't have charted you couldn't have charted they couldn't have charted	I couldn't have been charting you couldn't have been charting she couldn't have been charting we couldn't have been charting you couldn't have been charting they couldn't have been charting

Interrogative form

Simple form	V-ing form
could I chart? could you chart? could she chart? could we chart? could you chart? could they chart?	could I be charting? could you be charting? could she be charting? could we be charting? could you be charting? could they be charting?
Perfect	V-ing perfect
could I have charted? could you have charted? could she have charted? could we have charted? could you have charted? could they have charted?	could I have been charting? could you have been charting? could she have been charting? could we have been charting? could you have been charting? could they have been charting?

Interro-negative form

Simple form	V-ing form
couldn't I chart? couldn't you chart? couldn't she chart? couldn't we chart? couldn't you chart? couldn't they chart?	couldn't I be charting? couldn't you be charting? couldn't she be charting? couldn't we be charting? couldn't you be charting? couldn't they be charting?
Perfect	V-ing perfect
couldn't I have charted? couldn't you have charted? couldn't she have charted? couldn't we have charted? couldn't you have charted? couldn't they have charted?	couldn't I have been charting? couldn't you have been charting? couldn't she have been charting? couldn't we have been charting? couldn't you have been charting? couldn't they have been charting?