English verb conjugation
COULD SUPERREFINE

Regular verb: superrefine - superrefined - superrefined

Affirmation

Simple form	V-ing form
I could superrefine you could superrefine he could superrefine we could superrefine you could superrefine they could superrefine	I could be superrefining you could be superrefining he could be superrefining we could be superrefining you could be superrefining they could be superrefining
Perfect	V-ing perfect
I could have superrefined you could have superrefined he could have superrefined we could have superrefined you could have superrefined they could have superrefined	I could have been superrefining you could have been superrefining he could have been superrefining we could have been superrefining you could have been superrefining they could have been superrefining

Negation

Simple form	V-ing form
I couldn't superrefine you couldn't superrefine he couldn't superrefine we couldn't superrefine you couldn't superrefine they couldn't superrefine	I couldn't be superrefining you couldn't be superrefining he couldn't be superrefining we couldn't be superrefining you couldn't be superrefining they couldn't be superrefining
Perfect	V-ing perfect
I couldn't have superrefined you couldn't have superrefined he couldn't have superrefined we couldn't have superrefined you couldn't have superrefined they couldn't have superrefined	I couldn't have been superrefining you couldn't have been superrefining he couldn't have been superrefining we couldn't have been superrefining you couldn't have been superrefining they couldn't have been superrefining

Interrogative form

Simple form	V-ing form
could I superrefine? could you superrefine? could he superrefine? could we superrefine? could you superrefine? could they superrefine?	could I be superrefining? could you be superrefining? could he be superrefining? could we be superrefining? could you be superrefining? could they be superrefining?
Perfect	V-ing perfect
could I have superrefined? could you have superrefined? could he have superrefined? could we have superrefined? could you have superrefined? could they have superrefined?	could I have been superrefining? could you have been superrefining? could he have been superrefining? could we have been superrefining? could you have been superrefining? could they have been superrefining?

Interro-negative form

Simple form	V-ing form
couldn't I superrefine? couldn't you superrefine? couldn't he superrefine? couldn't we superrefine? couldn't you superrefine? couldn't they superrefine?	couldn't I be superrefining? couldn't you be superrefining? couldn't he be superrefining? couldn't we be superrefining? couldn't you be superrefining? couldn't they be superrefining?
Perfect	V-ing perfect
couldn't I have superrefined? couldn't you have superrefined? couldn't he have superrefined? couldn't we have superrefined? couldn't you have superrefined? couldn't they have superrefined?	couldn't I have been superrefining? couldn't you have been superrefining? couldn't he have been superrefining? couldn't we have been superrefining? couldn't you have been superrefining? couldn't they have been superrefining?