English verb conjugation
COULD PREVENT PREVENT

Regular verb: prevent prevent - prevent prevented - prevent prevented

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could prevent prevent you could prevent prevent he could prevent prevent we could prevent prevent you could prevent prevent they could prevent prevent	I could be prevent preventing you could be prevent preventing he could be prevent preventing we could be prevent preventing you could be prevent preventing they could be prevent preventing
Perfect	V-ing perfect
I could have prevent prevented you could have prevent prevented he could have prevent prevented we could have prevent prevented you could have prevent prevented they could have prevent prevented	I could have been prevent preventing you could have been prevent preventing he could have been prevent preventing we could have been prevent preventing you could have been prevent preventing they could have been prevent preventing

Negation

Simple form	V-ing form
I couldn't prevent prevent you couldn't prevent prevent he couldn't prevent prevent we couldn't prevent prevent you couldn't prevent prevent they couldn't prevent prevent	I couldn't be prevent preventing you couldn't be prevent preventing he couldn't be prevent preventing we couldn't be prevent preventing you couldn't be prevent preventing they couldn't be prevent preventing
Perfect	V-ing perfect
I couldn't have prevent prevented you couldn't have prevent prevented he couldn't have prevent prevented we couldn't have prevent prevented you couldn't have prevent prevented they couldn't have prevent prevented	I couldn't have been prevent preventing you couldn't have been prevent preventing he couldn't have been prevent preventing we couldn't have been prevent preventing you couldn't have been prevent preventing they couldn't have been prevent preventing

Interrogative form

Simple form	V-ing form
could I prevent prevent? could you prevent prevent? could he prevent prevent? could we prevent prevent? could you prevent prevent? could they prevent prevent?	could I be prevent preventing? could you be prevent preventing? could he be prevent preventing? could we be prevent preventing? could you be prevent preventing? could they be prevent preventing?
Perfect	V-ing perfect
could I have prevent prevented? could you have prevent prevented? could he have prevent prevented? could we have prevent prevented? could you have prevent prevented? could they have prevent prevented?	could I have been prevent preventing? could you have been prevent preventing? could he have been prevent preventing? could we have been prevent preventing? could you have been prevent preventing? could they have been prevent preventing?

Interro-negative form

Simple form	V-ing form
couldn't I prevent prevent? couldn't you prevent prevent? couldn't he prevent prevent? couldn't we prevent prevent? couldn't you prevent prevent? couldn't they prevent prevent?	couldn't I be prevent preventing? couldn't you be prevent preventing? couldn't he be prevent preventing? couldn't we be prevent preventing? couldn't you be prevent preventing? couldn't they be prevent preventing?
Perfect	V-ing perfect
couldn't I have prevent prevented? couldn't you have prevent prevented? couldn't he have prevent prevented? couldn't we have prevent prevented? couldn't you have prevent prevented? couldn't they have prevent prevented?	couldn't I have been prevent preventing? couldn't you have been prevent preventing? couldn't he have been prevent preventing? couldn't we have been prevent preventing? couldn't you have been prevent preventing? couldn't they have been prevent preventing?