English verb conjugation
COULD EAVESDROP

Regular verb: eavesdrop - eavesdropped - eavesdropped

Affirmation

Simple form	V-ing form
I could eavesdrop you could eavesdrop she could eavesdrop we could eavesdrop you could eavesdrop they could eavesdrop	I could be eavesdropping you could be eavesdropping she could be eavesdropping we could be eavesdropping you could be eavesdropping they could be eavesdropping
Perfect	V-ing perfect
I could have eavesdropped you could have eavesdropped she could have eavesdropped we could have eavesdropped you could have eavesdropped they could have eavesdropped	I could have been eavesdropping you could have been eavesdropping she could have been eavesdropping we could have been eavesdropping you could have been eavesdropping they could have been eavesdropping

Negation

Simple form	V-ing form
I couldn't eavesdrop you couldn't eavesdrop she couldn't eavesdrop we couldn't eavesdrop you couldn't eavesdrop they couldn't eavesdrop	I couldn't be eavesdropping you couldn't be eavesdropping she couldn't be eavesdropping we couldn't be eavesdropping you couldn't be eavesdropping they couldn't be eavesdropping
Perfect	V-ing perfect
I couldn't have eavesdropped you couldn't have eavesdropped she couldn't have eavesdropped we couldn't have eavesdropped you couldn't have eavesdropped they couldn't have eavesdropped	I couldn't have been eavesdropping you couldn't have been eavesdropping she couldn't have been eavesdropping we couldn't have been eavesdropping you couldn't have been eavesdropping they couldn't have been eavesdropping

Interrogative form

Simple form	V-ing form
could I eavesdrop? could you eavesdrop? could she eavesdrop? could we eavesdrop? could you eavesdrop? could they eavesdrop?	could I be eavesdropping? could you be eavesdropping? could she be eavesdropping? could we be eavesdropping? could you be eavesdropping? could they be eavesdropping?
Perfect	V-ing perfect
could I have eavesdropped? could you have eavesdropped? could she have eavesdropped? could we have eavesdropped? could you have eavesdropped? could they have eavesdropped?	could I have been eavesdropping? could you have been eavesdropping? could she have been eavesdropping? could we have been eavesdropping? could you have been eavesdropping? could they have been eavesdropping?

Interro-negative form

Simple form	V-ing form
couldn't I eavesdrop? couldn't you eavesdrop? couldn't she eavesdrop? couldn't we eavesdrop? couldn't you eavesdrop? couldn't they eavesdrop?	couldn't I be eavesdropping? couldn't you be eavesdropping? couldn't she be eavesdropping? couldn't we be eavesdropping? couldn't you be eavesdropping? couldn't they be eavesdropping?
Perfect	V-ing perfect
couldn't I have eavesdropped? couldn't you have eavesdropped? couldn't she have eavesdropped? couldn't we have eavesdropped? couldn't you have eavesdropped? couldn't they have eavesdropped?	couldn't I have been eavesdropping? couldn't you have been eavesdropping? couldn't she have been eavesdropping? couldn't we have been eavesdropping? couldn't you have been eavesdropping? couldn't they have been eavesdropping?