English verb conjugation
COULD BOBBLE

Regular verb: bobble - bobbled - bobbled

Affirmation

Simple form	V-ing form
I could bobble you could bobble he could bobble we could bobble you could bobble they could bobble	I could be bobbling you could be bobbling he could be bobbling we could be bobbling you could be bobbling they could be bobbling
Perfect	V-ing perfect
I could have bobbled you could have bobbled he could have bobbled we could have bobbled you could have bobbled they could have bobbled	I could have been bobbling you could have been bobbling he could have been bobbling we could have been bobbling you could have been bobbling they could have been bobbling

Negation

Simple form	V-ing form
I couldn't bobble you couldn't bobble he couldn't bobble we couldn't bobble you couldn't bobble they couldn't bobble	I couldn't be bobbling you couldn't be bobbling he couldn't be bobbling we couldn't be bobbling you couldn't be bobbling they couldn't be bobbling
Perfect	V-ing perfect
I couldn't have bobbled you couldn't have bobbled he couldn't have bobbled we couldn't have bobbled you couldn't have bobbled they couldn't have bobbled	I couldn't have been bobbling you couldn't have been bobbling he couldn't have been bobbling we couldn't have been bobbling you couldn't have been bobbling they couldn't have been bobbling

Interrogative form

Simple form	V-ing form
could I bobble? could you bobble? could he bobble? could we bobble? could you bobble? could they bobble?	could I be bobbling? could you be bobbling? could he be bobbling? could we be bobbling? could you be bobbling? could they be bobbling?
Perfect	V-ing perfect
could I have bobbled? could you have bobbled? could he have bobbled? could we have bobbled? could you have bobbled? could they have bobbled?	could I have been bobbling? could you have been bobbling? could he have been bobbling? could we have been bobbling? could you have been bobbling? could they have been bobbling?

Interro-negative form

Simple form	V-ing form
couldn't I bobble? couldn't you bobble? couldn't he bobble? couldn't we bobble? couldn't you bobble? couldn't they bobble?	couldn't I be bobbling? couldn't you be bobbling? couldn't he be bobbling? couldn't we be bobbling? couldn't you be bobbling? couldn't they be bobbling?
Perfect	V-ing perfect
couldn't I have bobbled? couldn't you have bobbled? couldn't he have bobbled? couldn't we have bobbled? couldn't you have bobbled? couldn't they have bobbled?	couldn't I have been bobbling? couldn't you have been bobbling? couldn't he have been bobbling? couldn't we have been bobbling? couldn't you have been bobbling? couldn't they have been bobbling?