English verb conjugation
COULD SIMPLE

Regular verb: simple - simpled - simpled

Affirmation

Simple form	V-ing form
I could simple you could simple he could simple we could simple you could simple they could simple	I could be simpling you could be simpling he could be simpling we could be simpling you could be simpling they could be simpling
Perfect	V-ing perfect
I could have simpled you could have simpled he could have simpled we could have simpled you could have simpled they could have simpled	I could have been simpling you could have been simpling he could have been simpling we could have been simpling you could have been simpling they could have been simpling

Negation

Simple form	V-ing form
I couldn't simple you couldn't simple he couldn't simple we couldn't simple you couldn't simple they couldn't simple	I couldn't be simpling you couldn't be simpling he couldn't be simpling we couldn't be simpling you couldn't be simpling they couldn't be simpling
Perfect	V-ing perfect
I couldn't have simpled you couldn't have simpled he couldn't have simpled we couldn't have simpled you couldn't have simpled they couldn't have simpled	I couldn't have been simpling you couldn't have been simpling he couldn't have been simpling we couldn't have been simpling you couldn't have been simpling they couldn't have been simpling

Interrogative form

Simple form	V-ing form
could I simple? could you simple? could he simple? could we simple? could you simple? could they simple?	could I be simpling? could you be simpling? could he be simpling? could we be simpling? could you be simpling? could they be simpling?
Perfect	V-ing perfect
could I have simpled? could you have simpled? could he have simpled? could we have simpled? could you have simpled? could they have simpled?	could I have been simpling? could you have been simpling? could he have been simpling? could we have been simpling? could you have been simpling? could they have been simpling?

Interro-negative form

Simple form	V-ing form
couldn't I simple? couldn't you simple? couldn't he simple? couldn't we simple? couldn't you simple? couldn't they simple?	couldn't I be simpling? couldn't you be simpling? couldn't he be simpling? couldn't we be simpling? couldn't you be simpling? couldn't they be simpling?
Perfect	V-ing perfect
couldn't I have simpled? couldn't you have simpled? couldn't he have simpled? couldn't we have simpled? couldn't you have simpled? couldn't they have simpled?	couldn't I have been simpling? couldn't you have been simpling? couldn't he have been simpling? couldn't we have been simpling? couldn't you have been simpling? couldn't they have been simpling?