English verb conjugation
COULD SUBSIDE

Regular verb: subside - subsided - subsided

Affirmation

Simple form	V-ing form
I could subside you could subside he could subside we could subside you could subside they could subside	I could be subsiding you could be subsiding he could be subsiding we could be subsiding you could be subsiding they could be subsiding
Perfect	V-ing perfect
I could have subsided you could have subsided he could have subsided we could have subsided you could have subsided they could have subsided	I could have been subsiding you could have been subsiding he could have been subsiding we could have been subsiding you could have been subsiding they could have been subsiding

Negation

Simple form	V-ing form
I could not subside you could not subside he could not subside we could not subside you could not subside they could not subside	I could not be subsiding you could not be subsiding he could not be subsiding we could not be subsiding you could not be subsiding they could not be subsiding
Perfect	V-ing perfect
I could not have subsided you could not have subsided he could not have subsided we could not have subsided you could not have subsided they could not have subsided	I could not have been subsiding you could not have been subsiding he could not have been subsiding we could not have been subsiding you could not have been subsiding they could not have been subsiding

Interrogative form

Simple form	V-ing form
could I subside? could you subside? could he subside? could we subside? could you subside? could they subside?	could I be subsiding? could you be subsiding? could he be subsiding? could we be subsiding? could you be subsiding? could they be subsiding?
Perfect	V-ing perfect
could I have subsided? could you have subsided? could he have subsided? could we have subsided? could you have subsided? could they have subsided?	could I have been subsiding? could you have been subsiding? could he have been subsiding? could we have been subsiding? could you have been subsiding? could they have been subsiding?

Interro-negative form

Simple form	V-ing form
could I not subside? could you not subside? could he not subside? could we not subside? could you not subside? could they not subside?	could I not be subsiding? could you not be subsiding? could he not be subsiding? could we not be subsiding? could you not be subsiding? could they not be subsiding?
Perfect	V-ing perfect
could I not have subsided? could you not have subsided? could he not have subsided? could we not have subsided? could you not have subsided? could they not have subsided?	could I not have been subsiding? could you not have been subsiding? could he not have been subsiding? could we not have been subsiding? could you not have been subsiding? could they not have been subsiding?