English verb conjugation
COULD FLOP

Regular verb: flop - flopped - flopped

Affirmation

Simple form	V-ing form
I could flop you could flop he could flop we could flop you could flop they could flop	I could be flopping you could be flopping he could be flopping we could be flopping you could be flopping they could be flopping
Perfect	V-ing perfect
I could have flopped you could have flopped he could have flopped we could have flopped you could have flopped they could have flopped	I could have been flopping you could have been flopping he could have been flopping we could have been flopping you could have been flopping they could have been flopping

Negation

Simple form	V-ing form
I could not flop you could not flop he could not flop we could not flop you could not flop they could not flop	I could not be flopping you could not be flopping he could not be flopping we could not be flopping you could not be flopping they could not be flopping
Perfect	V-ing perfect
I could not have flopped you could not have flopped he could not have flopped we could not have flopped you could not have flopped they could not have flopped	I could not have been flopping you could not have been flopping he could not have been flopping we could not have been flopping you could not have been flopping they could not have been flopping

Interrogative form

Simple form	V-ing form
could I flop? could you flop? could he flop? could we flop? could you flop? could they flop?	could I be flopping? could you be flopping? could he be flopping? could we be flopping? could you be flopping? could they be flopping?
Perfect	V-ing perfect
could I have flopped? could you have flopped? could he have flopped? could we have flopped? could you have flopped? could they have flopped?	could I have been flopping? could you have been flopping? could he have been flopping? could we have been flopping? could you have been flopping? could they have been flopping?

Interro-negative form

Simple form	V-ing form
could I not flop? could you not flop? could he not flop? could we not flop? could you not flop? could they not flop?	could I not be flopping? could you not be flopping? could he not be flopping? could we not be flopping? could you not be flopping? could they not be flopping?
Perfect	V-ing perfect
could I not have flopped? could you not have flopped? could he not have flopped? could we not have flopped? could you not have flopped? could they not have flopped?	could I not have been flopping? could you not have been flopping? could he not have been flopping? could we not have been flopping? could you not have been flopping? could they not have been flopping?