English verb conjugation
COULD NICK

Regular verb: nick - nicked - nicked

Affirmation

Simple form	V-ing form
I could nick you could nick she could nick we could nick you could nick they could nick	I could be nicking you could be nicking she could be nicking we could be nicking you could be nicking they could be nicking
Perfect	V-ing perfect
I could have nicked you could have nicked she could have nicked we could have nicked you could have nicked they could have nicked	I could have been nicking you could have been nicking she could have been nicking we could have been nicking you could have been nicking they could have been nicking

Negation

Simple form	V-ing form
I couldn't nick you couldn't nick she couldn't nick we couldn't nick you couldn't nick they couldn't nick	I couldn't be nicking you couldn't be nicking she couldn't be nicking we couldn't be nicking you couldn't be nicking they couldn't be nicking
Perfect	V-ing perfect
I couldn't have nicked you couldn't have nicked she couldn't have nicked we couldn't have nicked you couldn't have nicked they couldn't have nicked	I couldn't have been nicking you couldn't have been nicking she couldn't have been nicking we couldn't have been nicking you couldn't have been nicking they couldn't have been nicking

Interrogative form

Simple form	V-ing form
could I nick? could you nick? could she nick? could we nick? could you nick? could they nick?	could I be nicking? could you be nicking? could she be nicking? could we be nicking? could you be nicking? could they be nicking?
Perfect	V-ing perfect
could I have nicked? could you have nicked? could she have nicked? could we have nicked? could you have nicked? could they have nicked?	could I have been nicking? could you have been nicking? could she have been nicking? could we have been nicking? could you have been nicking? could they have been nicking?

Interro-negative form

Simple form	V-ing form
couldn't I nick? couldn't you nick? couldn't she nick? couldn't we nick? couldn't you nick? couldn't they nick?	couldn't I be nicking? couldn't you be nicking? couldn't she be nicking? couldn't we be nicking? couldn't you be nicking? couldn't they be nicking?
Perfect	V-ing perfect
couldn't I have nicked? couldn't you have nicked? couldn't she have nicked? couldn't we have nicked? couldn't you have nicked? couldn't they have nicked?	couldn't I have been nicking? couldn't you have been nicking? couldn't she have been nicking? couldn't we have been nicking? couldn't you have been nicking? couldn't they have been nicking?