English verb conjugation
COULD FLUMMOX

Regular verb: flummox - flummoxed - flummoxed

Affirmation

Simple form	V-ing form
I could flummox you could flummox he could flummox we could flummox you could flummox they could flummox	I could be flummoxing you could be flummoxing he could be flummoxing we could be flummoxing you could be flummoxing they could be flummoxing
Perfect	V-ing perfect
I could have flummoxed you could have flummoxed he could have flummoxed we could have flummoxed you could have flummoxed they could have flummoxed	I could have been flummoxing you could have been flummoxing he could have been flummoxing we could have been flummoxing you could have been flummoxing they could have been flummoxing

Negation

Simple form	V-ing form
I couldn't flummox you couldn't flummox he couldn't flummox we couldn't flummox you couldn't flummox they couldn't flummox	I couldn't be flummoxing you couldn't be flummoxing he couldn't be flummoxing we couldn't be flummoxing you couldn't be flummoxing they couldn't be flummoxing
Perfect	V-ing perfect
I couldn't have flummoxed you couldn't have flummoxed he couldn't have flummoxed we couldn't have flummoxed you couldn't have flummoxed they couldn't have flummoxed	I couldn't have been flummoxing you couldn't have been flummoxing he couldn't have been flummoxing we couldn't have been flummoxing you couldn't have been flummoxing they couldn't have been flummoxing

Interrogative form

Simple form	V-ing form
could I flummox? could you flummox? could he flummox? could we flummox? could you flummox? could they flummox?	could I be flummoxing? could you be flummoxing? could he be flummoxing? could we be flummoxing? could you be flummoxing? could they be flummoxing?
Perfect	V-ing perfect
could I have flummoxed? could you have flummoxed? could he have flummoxed? could we have flummoxed? could you have flummoxed? could they have flummoxed?	could I have been flummoxing? could you have been flummoxing? could he have been flummoxing? could we have been flummoxing? could you have been flummoxing? could they have been flummoxing?

Interro-negative form

Simple form	V-ing form
couldn't I flummox? couldn't you flummox? couldn't he flummox? couldn't we flummox? couldn't you flummox? couldn't they flummox?	couldn't I be flummoxing? couldn't you be flummoxing? couldn't he be flummoxing? couldn't we be flummoxing? couldn't you be flummoxing? couldn't they be flummoxing?
Perfect	V-ing perfect
couldn't I have flummoxed? couldn't you have flummoxed? couldn't he have flummoxed? couldn't we have flummoxed? couldn't you have flummoxed? couldn't they have flummoxed?	couldn't I have been flummoxing? couldn't you have been flummoxing? couldn't he have been flummoxing? couldn't we have been flummoxing? couldn't you have been flummoxing? couldn't they have been flummoxing?