English verb conjugation
COULD OUTFUMBLE

Regular verb: outfumble - outfumbled - outfumbled

Affirmation

Simple form	V-ing form
I could outfumble you could outfumble he could outfumble we could outfumble you could outfumble they could outfumble	I could be outfumbling you could be outfumbling he could be outfumbling we could be outfumbling you could be outfumbling they could be outfumbling
Perfect	V-ing perfect
I could have outfumbled you could have outfumbled he could have outfumbled we could have outfumbled you could have outfumbled they could have outfumbled	I could have been outfumbling you could have been outfumbling he could have been outfumbling we could have been outfumbling you could have been outfumbling they could have been outfumbling

Negation

Simple form	V-ing form
I couldn't outfumble you couldn't outfumble he couldn't outfumble we couldn't outfumble you couldn't outfumble they couldn't outfumble	I couldn't be outfumbling you couldn't be outfumbling he couldn't be outfumbling we couldn't be outfumbling you couldn't be outfumbling they couldn't be outfumbling
Perfect	V-ing perfect
I couldn't have outfumbled you couldn't have outfumbled he couldn't have outfumbled we couldn't have outfumbled you couldn't have outfumbled they couldn't have outfumbled	I couldn't have been outfumbling you couldn't have been outfumbling he couldn't have been outfumbling we couldn't have been outfumbling you couldn't have been outfumbling they couldn't have been outfumbling

Interrogative form

Simple form	V-ing form
could I outfumble? could you outfumble? could he outfumble? could we outfumble? could you outfumble? could they outfumble?	could I be outfumbling? could you be outfumbling? could he be outfumbling? could we be outfumbling? could you be outfumbling? could they be outfumbling?
Perfect	V-ing perfect
could I have outfumbled? could you have outfumbled? could he have outfumbled? could we have outfumbled? could you have outfumbled? could they have outfumbled?	could I have been outfumbling? could you have been outfumbling? could he have been outfumbling? could we have been outfumbling? could you have been outfumbling? could they have been outfumbling?

Interro-negative form

Simple form	V-ing form
couldn't I outfumble? couldn't you outfumble? couldn't he outfumble? couldn't we outfumble? couldn't you outfumble? couldn't they outfumble?	couldn't I be outfumbling? couldn't you be outfumbling? couldn't he be outfumbling? couldn't we be outfumbling? couldn't you be outfumbling? couldn't they be outfumbling?
Perfect	V-ing perfect
couldn't I have outfumbled? couldn't you have outfumbled? couldn't he have outfumbled? couldn't we have outfumbled? couldn't you have outfumbled? couldn't they have outfumbled?	couldn't I have been outfumbling? couldn't you have been outfumbling? couldn't he have been outfumbling? couldn't we have been outfumbling? couldn't you have been outfumbling? couldn't they have been outfumbling?