English verb conjugation
COULD DART

Regular verb: dart - darted - darted

Affirmation

Simple form	V-ing form
I could dart you could dart he could dart we could dart you could dart they could dart	I could be darting you could be darting he could be darting we could be darting you could be darting they could be darting
Perfect	V-ing perfect
I could have darted you could have darted he could have darted we could have darted you could have darted they could have darted	I could have been darting you could have been darting he could have been darting we could have been darting you could have been darting they could have been darting

Negation

Simple form	V-ing form
I couldn't dart you couldn't dart he couldn't dart we couldn't dart you couldn't dart they couldn't dart	I couldn't be darting you couldn't be darting he couldn't be darting we couldn't be darting you couldn't be darting they couldn't be darting
Perfect	V-ing perfect
I couldn't have darted you couldn't have darted he couldn't have darted we couldn't have darted you couldn't have darted they couldn't have darted	I couldn't have been darting you couldn't have been darting he couldn't have been darting we couldn't have been darting you couldn't have been darting they couldn't have been darting

Interrogative form

Simple form	V-ing form
could I dart? could you dart? could he dart? could we dart? could you dart? could they dart?	could I be darting? could you be darting? could he be darting? could we be darting? could you be darting? could they be darting?
Perfect	V-ing perfect
could I have darted? could you have darted? could he have darted? could we have darted? could you have darted? could they have darted?	could I have been darting? could you have been darting? could he have been darting? could we have been darting? could you have been darting? could they have been darting?

Interro-negative form

Simple form	V-ing form
couldn't I dart? couldn't you dart? couldn't he dart? couldn't we dart? couldn't you dart? couldn't they dart?	couldn't I be darting? couldn't you be darting? couldn't he be darting? couldn't we be darting? couldn't you be darting? couldn't they be darting?
Perfect	V-ing perfect
couldn't I have darted? couldn't you have darted? couldn't he have darted? couldn't we have darted? couldn't you have darted? couldn't they have darted?	couldn't I have been darting? couldn't you have been darting? couldn't he have been darting? couldn't we have been darting? couldn't you have been darting? couldn't they have been darting?