English verb conjugation
COULD JUMBLE

Regular verb: jumble - jumbled - jumbled

Affirmation

Simple form	V-ing form
I could jumble you could jumble he could jumble we could jumble you could jumble they could jumble	I could be jumbling you could be jumbling he could be jumbling we could be jumbling you could be jumbling they could be jumbling
Perfect	V-ing perfect
I could have jumbled you could have jumbled he could have jumbled we could have jumbled you could have jumbled they could have jumbled	I could have been jumbling you could have been jumbling he could have been jumbling we could have been jumbling you could have been jumbling they could have been jumbling

Negation

Simple form	V-ing form
I couldn't jumble you couldn't jumble he couldn't jumble we couldn't jumble you couldn't jumble they couldn't jumble	I couldn't be jumbling you couldn't be jumbling he couldn't be jumbling we couldn't be jumbling you couldn't be jumbling they couldn't be jumbling
Perfect	V-ing perfect
I couldn't have jumbled you couldn't have jumbled he couldn't have jumbled we couldn't have jumbled you couldn't have jumbled they couldn't have jumbled	I couldn't have been jumbling you couldn't have been jumbling he couldn't have been jumbling we couldn't have been jumbling you couldn't have been jumbling they couldn't have been jumbling

Interrogative form

Simple form	V-ing form
could I jumble? could you jumble? could he jumble? could we jumble? could you jumble? could they jumble?	could I be jumbling? could you be jumbling? could he be jumbling? could we be jumbling? could you be jumbling? could they be jumbling?
Perfect	V-ing perfect
could I have jumbled? could you have jumbled? could he have jumbled? could we have jumbled? could you have jumbled? could they have jumbled?	could I have been jumbling? could you have been jumbling? could he have been jumbling? could we have been jumbling? could you have been jumbling? could they have been jumbling?

Interro-negative form

Simple form	V-ing form
couldn't I jumble? couldn't you jumble? couldn't he jumble? couldn't we jumble? couldn't you jumble? couldn't they jumble?	couldn't I be jumbling? couldn't you be jumbling? couldn't he be jumbling? couldn't we be jumbling? couldn't you be jumbling? couldn't they be jumbling?
Perfect	V-ing perfect
couldn't I have jumbled? couldn't you have jumbled? couldn't he have jumbled? couldn't we have jumbled? couldn't you have jumbled? couldn't they have jumbled?	couldn't I have been jumbling? couldn't you have been jumbling? couldn't he have been jumbling? couldn't we have been jumbling? couldn't you have been jumbling? couldn't they have been jumbling?