English verb conjugation
COULD OVERACHEIVE

Regular verb: overacheive - overacheived - overacheived

Affirmation

Simple form	V-ing form
I could overacheive you could overacheive he could overacheive we could overacheive you could overacheive they could overacheive	I could be overacheiving you could be overacheiving he could be overacheiving we could be overacheiving you could be overacheiving they could be overacheiving
Perfect	V-ing perfect
I could have overacheived you could have overacheived he could have overacheived we could have overacheived you could have overacheived they could have overacheived	I could have been overacheiving you could have been overacheiving he could have been overacheiving we could have been overacheiving you could have been overacheiving they could have been overacheiving

Negation

Simple form	V-ing form
I could not overacheive you could not overacheive he could not overacheive we could not overacheive you could not overacheive they could not overacheive	I could not be overacheiving you could not be overacheiving he could not be overacheiving we could not be overacheiving you could not be overacheiving they could not be overacheiving
Perfect	V-ing perfect
I could not have overacheived you could not have overacheived he could not have overacheived we could not have overacheived you could not have overacheived they could not have overacheived	I could not have been overacheiving you could not have been overacheiving he could not have been overacheiving we could not have been overacheiving you could not have been overacheiving they could not have been overacheiving

Interrogative form

Simple form	V-ing form
could I overacheive? could you overacheive? could he overacheive? could we overacheive? could you overacheive? could they overacheive?	could I be overacheiving? could you be overacheiving? could he be overacheiving? could we be overacheiving? could you be overacheiving? could they be overacheiving?
Perfect	V-ing perfect
could I have overacheived? could you have overacheived? could he have overacheived? could we have overacheived? could you have overacheived? could they have overacheived?	could I have been overacheiving? could you have been overacheiving? could he have been overacheiving? could we have been overacheiving? could you have been overacheiving? could they have been overacheiving?

Interro-negative form

Simple form	V-ing form
could I not overacheive? could you not overacheive? could he not overacheive? could we not overacheive? could you not overacheive? could they not overacheive?	could I not be overacheiving? could you not be overacheiving? could he not be overacheiving? could we not be overacheiving? could you not be overacheiving? could they not be overacheiving?
Perfect	V-ing perfect
could I not have overacheived? could you not have overacheived? could he not have overacheived? could we not have overacheived? could you not have overacheived? could they not have overacheived?	could I not have been overacheiving? could you not have been overacheiving? could he not have been overacheiving? could we not have been overacheiving? could you not have been overacheiving? could they not have been overacheiving?