English verb conjugation
COULD OUTFUMBLE

Regular verb: outfumble - outfumbled - outfumbled

Affirmation

Simple form	V-ing form
I could outfumble you could outfumble she could outfumble we could outfumble you could outfumble they could outfumble	I could be outfumbling you could be outfumbling she 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 she 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 she 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 she 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 she 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 she 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 she 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 she outfumble? could we outfumble? could you outfumble? could they outfumble?	could I be outfumbling? could you be outfumbling? could she 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 she 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 she 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 she 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 she 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 she 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 she have been outfumbling? couldn't we have been outfumbling? couldn't you have been outfumbling? couldn't they have been outfumbling?