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 couldn't flop you couldn't flop he couldn't flop we couldn't flop you couldn't flop they couldn't flop	I couldn't be flopping you couldn't be flopping he couldn't be flopping we couldn't be flopping you couldn't be flopping they couldn't be flopping
Perfect	V-ing perfect
I couldn't have flopped you couldn't have flopped he couldn't have flopped we couldn't have flopped you couldn't have flopped they couldn't have flopped	I couldn't have been flopping you couldn't have been flopping he couldn't have been flopping we couldn't have been flopping you couldn't have been flopping they couldn't 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
couldn't I flop? couldn't you flop? couldn't he flop? couldn't we flop? couldn't you flop? couldn't they flop?	couldn't I be flopping? couldn't you be flopping? couldn't he be flopping? couldn't we be flopping? couldn't you be flopping? couldn't they be flopping?
Perfect	V-ing perfect
couldn't I have flopped? couldn't you have flopped? couldn't he have flopped? couldn't we have flopped? couldn't you have flopped? couldn't they have flopped?	couldn't I have been flopping? couldn't you have been flopping? couldn't he have been flopping? couldn't we have been flopping? couldn't you have been flopping? couldn't they have been flopping?