English verb conjugation
COULD COG

Regular verb: cog - coged - coged

Affirmation

Simple form	V-ing form
I could cog you could cog he could cog we could cog you could cog they could cog	I could be coging you could be coging he could be coging we could be coging you could be coging they could be coging
Perfect	V-ing perfect
I could have coged you could have coged he could have coged we could have coged you could have coged they could have coged	I could have been coging you could have been coging he could have been coging we could have been coging you could have been coging they could have been coging

Negation

Simple form	V-ing form
I couldn't cog you couldn't cog he couldn't cog we couldn't cog you couldn't cog they couldn't cog	I couldn't be coging you couldn't be coging he couldn't be coging we couldn't be coging you couldn't be coging they couldn't be coging
Perfect	V-ing perfect
I couldn't have coged you couldn't have coged he couldn't have coged we couldn't have coged you couldn't have coged they couldn't have coged	I couldn't have been coging you couldn't have been coging he couldn't have been coging we couldn't have been coging you couldn't have been coging they couldn't have been coging

Interrogative form

Simple form	V-ing form
could I cog? could you cog? could he cog? could we cog? could you cog? could they cog?	could I be coging? could you be coging? could he be coging? could we be coging? could you be coging? could they be coging?
Perfect	V-ing perfect
could I have coged? could you have coged? could he have coged? could we have coged? could you have coged? could they have coged?	could I have been coging? could you have been coging? could he have been coging? could we have been coging? could you have been coging? could they have been coging?

Interro-negative form

Simple form	V-ing form
couldn't I cog? couldn't you cog? couldn't he cog? couldn't we cog? couldn't you cog? couldn't they cog?	couldn't I be coging? couldn't you be coging? couldn't he be coging? couldn't we be coging? couldn't you be coging? couldn't they be coging?
Perfect	V-ing perfect
couldn't I have coged? couldn't you have coged? couldn't he have coged? couldn't we have coged? couldn't you have coged? couldn't they have coged?	couldn't I have been coging? couldn't you have been coging? couldn't he have been coging? couldn't we have been coging? couldn't you have been coging? couldn't they have been coging?