English verb conjugation
COULD SWOP

Regular verb: swop - swopped - swopped

Affirmation

Simple form	V-ing form
I could swop you could swop he could swop we could swop you could swop they could swop	I could be swopping you could be swopping he could be swopping we could be swopping you could be swopping they could be swopping
Perfect	V-ing perfect
I could have swopped you could have swopped he could have swopped we could have swopped you could have swopped they could have swopped	I could have been swopping you could have been swopping he could have been swopping we could have been swopping you could have been swopping they could have been swopping

Negation

Simple form	V-ing form
I could not swop you could not swop he could not swop we could not swop you could not swop they could not swop	I could not be swopping you could not be swopping he could not be swopping we could not be swopping you could not be swopping they could not be swopping
Perfect	V-ing perfect
I could not have swopped you could not have swopped he could not have swopped we could not have swopped you could not have swopped they could not have swopped	I could not have been swopping you could not have been swopping he could not have been swopping we could not have been swopping you could not have been swopping they could not have been swopping

Interrogative form

Simple form	V-ing form
could I swop? could you swop? could he swop? could we swop? could you swop? could they swop?	could I be swopping? could you be swopping? could he be swopping? could we be swopping? could you be swopping? could they be swopping?
Perfect	V-ing perfect
could I have swopped? could you have swopped? could he have swopped? could we have swopped? could you have swopped? could they have swopped?	could I have been swopping? could you have been swopping? could he have been swopping? could we have been swopping? could you have been swopping? could they have been swopping?

Interro-negative form

Simple form	V-ing form
could I not swop? could you not swop? could he not swop? could we not swop? could you not swop? could they not swop?	could I not be swopping? could you not be swopping? could he not be swopping? could we not be swopping? could you not be swopping? could they not be swopping?
Perfect	V-ing perfect
could I not have swopped? could you not have swopped? could he not have swopped? could we not have swopped? could you not have swopped? could they not have swopped?	could I not have been swopping? could you not have been swopping? could he not have been swopping? could we not have been swopping? could you not have been swopping? could they not have been swopping?