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 could not outfumble you could not outfumble he could not outfumble we could not outfumble you could not outfumble they could not outfumble	I could not be outfumbling you could not be outfumbling he could not be outfumbling we could not be outfumbling you could not be outfumbling they could not be outfumbling
Perfect	V-ing perfect
I could not have outfumbled you could not have outfumbled he could not have outfumbled we could not have outfumbled you could not have outfumbled they could not have outfumbled	I could not have been outfumbling you could not have been outfumbling he could not have been outfumbling we could not have been outfumbling you could not have been outfumbling they could not 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
could I not outfumble? could you not outfumble? could he not outfumble? could we not outfumble? could you not outfumble? could they not outfumble?	could I not be outfumbling? could you not be outfumbling? could he not be outfumbling? could we not be outfumbling? could you not be outfumbling? could they not be outfumbling?
Perfect	V-ing perfect
could I not have outfumbled? could you not have outfumbled? could he not have outfumbled? could we not have outfumbled? could you not have outfumbled? could they not have outfumbled?	could I not have been outfumbling? could you not have been outfumbling? could he not have been outfumbling? could we not have been outfumbling? could you not have been outfumbling? could they not have been outfumbling?