English verb conjugation
COULD QUICKSTEP

Regular verb: quickstep - quicksteped - quicksteped

Affirmation

Simple form	V-ing form
I could quickstep you could quickstep she could quickstep we could quickstep you could quickstep they could quickstep	I could be quicksteping you could be quicksteping she could be quicksteping we could be quicksteping you could be quicksteping they could be quicksteping
Perfect	V-ing perfect
I could have quicksteped you could have quicksteped she could have quicksteped we could have quicksteped you could have quicksteped they could have quicksteped	I could have been quicksteping you could have been quicksteping she could have been quicksteping we could have been quicksteping you could have been quicksteping they could have been quicksteping

Negation

Simple form	V-ing form
I couldn't quickstep you couldn't quickstep she couldn't quickstep we couldn't quickstep you couldn't quickstep they couldn't quickstep	I couldn't be quicksteping you couldn't be quicksteping she couldn't be quicksteping we couldn't be quicksteping you couldn't be quicksteping they couldn't be quicksteping
Perfect	V-ing perfect
I couldn't have quicksteped you couldn't have quicksteped she couldn't have quicksteped we couldn't have quicksteped you couldn't have quicksteped they couldn't have quicksteped	I couldn't have been quicksteping you couldn't have been quicksteping she couldn't have been quicksteping we couldn't have been quicksteping you couldn't have been quicksteping they couldn't have been quicksteping

Interrogative form

Simple form	V-ing form
could I quickstep? could you quickstep? could she quickstep? could we quickstep? could you quickstep? could they quickstep?	could I be quicksteping? could you be quicksteping? could she be quicksteping? could we be quicksteping? could you be quicksteping? could they be quicksteping?
Perfect	V-ing perfect
could I have quicksteped? could you have quicksteped? could she have quicksteped? could we have quicksteped? could you have quicksteped? could they have quicksteped?	could I have been quicksteping? could you have been quicksteping? could she have been quicksteping? could we have been quicksteping? could you have been quicksteping? could they have been quicksteping?

Interro-negative form

Simple form	V-ing form
couldn't I quickstep? couldn't you quickstep? couldn't she quickstep? couldn't we quickstep? couldn't you quickstep? couldn't they quickstep?	couldn't I be quicksteping? couldn't you be quicksteping? couldn't she be quicksteping? couldn't we be quicksteping? couldn't you be quicksteping? couldn't they be quicksteping?
Perfect	V-ing perfect
couldn't I have quicksteped? couldn't you have quicksteped? couldn't she have quicksteped? couldn't we have quicksteped? couldn't you have quicksteped? couldn't they have quicksteped?	couldn't I have been quicksteping? couldn't you have been quicksteping? couldn't she have been quicksteping? couldn't we have been quicksteping? couldn't you have been quicksteping? couldn't they have been quicksteping?