English verb conjugation
COULD CULM

Regular verb: culm - culmed - culmed

Affirmation

Simple form	V-ing form
I could culm you could culm he could culm we could culm you could culm they could culm	I could be culming you could be culming he could be culming we could be culming you could be culming they could be culming
Perfect	V-ing perfect
I could have culmed you could have culmed he could have culmed we could have culmed you could have culmed they could have culmed	I could have been culming you could have been culming he could have been culming we could have been culming you could have been culming they could have been culming

Negation

Simple form	V-ing form
I couldn't culm you couldn't culm he couldn't culm we couldn't culm you couldn't culm they couldn't culm	I couldn't be culming you couldn't be culming he couldn't be culming we couldn't be culming you couldn't be culming they couldn't be culming
Perfect	V-ing perfect
I couldn't have culmed you couldn't have culmed he couldn't have culmed we couldn't have culmed you couldn't have culmed they couldn't have culmed	I couldn't have been culming you couldn't have been culming he couldn't have been culming we couldn't have been culming you couldn't have been culming they couldn't have been culming

Interrogative form

Simple form	V-ing form
could I culm? could you culm? could he culm? could we culm? could you culm? could they culm?	could I be culming? could you be culming? could he be culming? could we be culming? could you be culming? could they be culming?
Perfect	V-ing perfect
could I have culmed? could you have culmed? could he have culmed? could we have culmed? could you have culmed? could they have culmed?	could I have been culming? could you have been culming? could he have been culming? could we have been culming? could you have been culming? could they have been culming?

Interro-negative form

Simple form	V-ing form
couldn't I culm? couldn't you culm? couldn't he culm? couldn't we culm? couldn't you culm? couldn't they culm?	couldn't I be culming? couldn't you be culming? couldn't he be culming? couldn't we be culming? couldn't you be culming? couldn't they be culming?
Perfect	V-ing perfect
couldn't I have culmed? couldn't you have culmed? couldn't he have culmed? couldn't we have culmed? couldn't you have culmed? couldn't they have culmed?	couldn't I have been culming? couldn't you have been culming? couldn't he have been culming? couldn't we have been culming? couldn't you have been culming? couldn't they have been culming?