English verb conjugation
COULD SPEED

Irregular verb: speed - sped - sped

Affirmation

Simple form	V-ing form
I could speed you could speed she could speed we could speed you could speed they could speed	I could be speeding you could be speeding she could be speeding we could be speeding you could be speeding they could be speeding
Perfect	V-ing perfect
I could have sped you could have sped she could have sped we could have sped you could have sped they could have sped	I could have been speeding you could have been speeding she could have been speeding we could have been speeding you could have been speeding they could have been speeding

Negation

Simple form	V-ing form
I couldn't speed you couldn't speed she couldn't speed we couldn't speed you couldn't speed they couldn't speed	I couldn't be speeding you couldn't be speeding she couldn't be speeding we couldn't be speeding you couldn't be speeding they couldn't be speeding
Perfect	V-ing perfect
I couldn't have sped you couldn't have sped she couldn't have sped we couldn't have sped you couldn't have sped they couldn't have sped	I couldn't have been speeding you couldn't have been speeding she couldn't have been speeding we couldn't have been speeding you couldn't have been speeding they couldn't have been speeding

Interrogative form

Simple form	V-ing form
could I speed? could you speed? could she speed? could we speed? could you speed? could they speed?	could I be speeding? could you be speeding? could she be speeding? could we be speeding? could you be speeding? could they be speeding?
Perfect	V-ing perfect
could I have sped? could you have sped? could she have sped? could we have sped? could you have sped? could they have sped?	could I have been speeding? could you have been speeding? could she have been speeding? could we have been speeding? could you have been speeding? could they have been speeding?

Interro-negative form

Simple form	V-ing form
couldn't I speed? couldn't you speed? couldn't she speed? couldn't we speed? couldn't you speed? couldn't they speed?	couldn't I be speeding? couldn't you be speeding? couldn't she be speeding? couldn't we be speeding? couldn't you be speeding? couldn't they be speeding?
Perfect	V-ing perfect
couldn't I have sped? couldn't you have sped? couldn't she have sped? couldn't we have sped? couldn't you have sped? couldn't they have sped?	couldn't I have been speeding? couldn't you have been speeding? couldn't she have been speeding? couldn't we have been speeding? couldn't you have been speeding? couldn't they have been speeding?