English verb conjugation
COULD OVERBLEACH

Regular verb: overbleach - overbleached - overbleached

Affirmation

Simple form	V-ing form
I could overbleach you could overbleach he could overbleach we could overbleach you could overbleach they could overbleach	I could be overbleaching you could be overbleaching he could be overbleaching we could be overbleaching you could be overbleaching they could be overbleaching
Perfect	V-ing perfect
I could have overbleached you could have overbleached he could have overbleached we could have overbleached you could have overbleached they could have overbleached	I could have been overbleaching you could have been overbleaching he could have been overbleaching we could have been overbleaching you could have been overbleaching they could have been overbleaching

Negation

Simple form	V-ing form
I couldn't overbleach you couldn't overbleach he couldn't overbleach we couldn't overbleach you couldn't overbleach they couldn't overbleach	I couldn't be overbleaching you couldn't be overbleaching he couldn't be overbleaching we couldn't be overbleaching you couldn't be overbleaching they couldn't be overbleaching
Perfect	V-ing perfect
I couldn't have overbleached you couldn't have overbleached he couldn't have overbleached we couldn't have overbleached you couldn't have overbleached they couldn't have overbleached	I couldn't have been overbleaching you couldn't have been overbleaching he couldn't have been overbleaching we couldn't have been overbleaching you couldn't have been overbleaching they couldn't have been overbleaching

Interrogative form

Simple form	V-ing form
could I overbleach? could you overbleach? could he overbleach? could we overbleach? could you overbleach? could they overbleach?	could I be overbleaching? could you be overbleaching? could he be overbleaching? could we be overbleaching? could you be overbleaching? could they be overbleaching?
Perfect	V-ing perfect
could I have overbleached? could you have overbleached? could he have overbleached? could we have overbleached? could you have overbleached? could they have overbleached?	could I have been overbleaching? could you have been overbleaching? could he have been overbleaching? could we have been overbleaching? could you have been overbleaching? could they have been overbleaching?

Interro-negative form

Simple form	V-ing form
couldn't I overbleach? couldn't you overbleach? couldn't he overbleach? couldn't we overbleach? couldn't you overbleach? couldn't they overbleach?	couldn't I be overbleaching? couldn't you be overbleaching? couldn't he be overbleaching? couldn't we be overbleaching? couldn't you be overbleaching? couldn't they be overbleaching?
Perfect	V-ing perfect
couldn't I have overbleached? couldn't you have overbleached? couldn't he have overbleached? couldn't we have overbleached? couldn't you have overbleached? couldn't they have overbleached?	couldn't I have been overbleaching? couldn't you have been overbleaching? couldn't he have been overbleaching? couldn't we have been overbleaching? couldn't you have been overbleaching? couldn't they have been overbleaching?