English verb conjugation
COULD SLING

Irregular verb: sling - slung - slung

Affirmation

Simple form	V-ing form
I could sling you could sling he could sling we could sling you could sling they could sling	I could be slinging you could be slinging he could be slinging we could be slinging you could be slinging they could be slinging
Perfect	V-ing perfect
I could have slung you could have slung he could have slung we could have slung you could have slung they could have slung	I could have been slinging you could have been slinging he could have been slinging we could have been slinging you could have been slinging they could have been slinging

Negation

Simple form	V-ing form
I couldn't sling you couldn't sling he couldn't sling we couldn't sling you couldn't sling they couldn't sling	I couldn't be slinging you couldn't be slinging he couldn't be slinging we couldn't be slinging you couldn't be slinging they couldn't be slinging
Perfect	V-ing perfect
I couldn't have slung you couldn't have slung he couldn't have slung we couldn't have slung you couldn't have slung they couldn't have slung	I couldn't have been slinging you couldn't have been slinging he couldn't have been slinging we couldn't have been slinging you couldn't have been slinging they couldn't have been slinging

Interrogative form

Simple form	V-ing form
could I sling? could you sling? could he sling? could we sling? could you sling? could they sling?	could I be slinging? could you be slinging? could he be slinging? could we be slinging? could you be slinging? could they be slinging?
Perfect	V-ing perfect
could I have slung? could you have slung? could he have slung? could we have slung? could you have slung? could they have slung?	could I have been slinging? could you have been slinging? could he have been slinging? could we have been slinging? could you have been slinging? could they have been slinging?

Interro-negative form

Simple form	V-ing form
couldn't I sling? couldn't you sling? couldn't he sling? couldn't we sling? couldn't you sling? couldn't they sling?	couldn't I be slinging? couldn't you be slinging? couldn't he be slinging? couldn't we be slinging? couldn't you be slinging? couldn't they be slinging?
Perfect	V-ing perfect
couldn't I have slung? couldn't you have slung? couldn't he have slung? couldn't we have slung? couldn't you have slung? couldn't they have slung?	couldn't I have been slinging? couldn't you have been slinging? couldn't he have been slinging? couldn't we have been slinging? couldn't you have been slinging? couldn't they have been slinging?