English verb conjugation
COULD COAL

Regular verb: coal - coaled - coaled

Affirmation

Simple form	V-ing form
I could coal you could coal he could coal we could coal you could coal they could coal	I could be coaling you could be coaling he could be coaling we could be coaling you could be coaling they could be coaling
Perfect	V-ing perfect
I could have coaled you could have coaled he could have coaled we could have coaled you could have coaled they could have coaled	I could have been coaling you could have been coaling he could have been coaling we could have been coaling you could have been coaling they could have been coaling

Negation

Simple form	V-ing form
I couldn't coal you couldn't coal he couldn't coal we couldn't coal you couldn't coal they couldn't coal	I couldn't be coaling you couldn't be coaling he couldn't be coaling we couldn't be coaling you couldn't be coaling they couldn't be coaling
Perfect	V-ing perfect
I couldn't have coaled you couldn't have coaled he couldn't have coaled we couldn't have coaled you couldn't have coaled they couldn't have coaled	I couldn't have been coaling you couldn't have been coaling he couldn't have been coaling we couldn't have been coaling you couldn't have been coaling they couldn't have been coaling

Interrogative form

Simple form	V-ing form
could I coal? could you coal? could he coal? could we coal? could you coal? could they coal?	could I be coaling? could you be coaling? could he be coaling? could we be coaling? could you be coaling? could they be coaling?
Perfect	V-ing perfect
could I have coaled? could you have coaled? could he have coaled? could we have coaled? could you have coaled? could they have coaled?	could I have been coaling? could you have been coaling? could he have been coaling? could we have been coaling? could you have been coaling? could they have been coaling?

Interro-negative form

Simple form	V-ing form
couldn't I coal? couldn't you coal? couldn't he coal? couldn't we coal? couldn't you coal? couldn't they coal?	couldn't I be coaling? couldn't you be coaling? couldn't he be coaling? couldn't we be coaling? couldn't you be coaling? couldn't they be coaling?
Perfect	V-ing perfect
couldn't I have coaled? couldn't you have coaled? couldn't he have coaled? couldn't we have coaled? couldn't you have coaled? couldn't they have coaled?	couldn't I have been coaling? couldn't you have been coaling? couldn't he have been coaling? couldn't we have been coaling? couldn't you have been coaling? couldn't they have been coaling?