English verb conjugation
COULD FLUMMOX

Regular verb: flummox - flummoxed - flummoxed

Affirmation

Simple form	V-ing form
I could flummox you could flummox she could flummox we could flummox you could flummox they could flummox	I could be flummoxing you could be flummoxing she 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 she 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 she 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 could not flummox you could not flummox she could not flummox we could not flummox you could not flummox they could not flummox	I could not be flummoxing you could not be flummoxing she could not be flummoxing we could not be flummoxing you could not be flummoxing they could not be flummoxing
Perfect	V-ing perfect
I could not have flummoxed you could not have flummoxed she could not have flummoxed we could not have flummoxed you could not have flummoxed they could not have flummoxed	I could not have been flummoxing you could not have been flummoxing she could not have been flummoxing we could not have been flummoxing you could not have been flummoxing they could not have been flummoxing

Interrogative form

Simple form	V-ing form
could I flummox? could you flummox? could she flummox? could we flummox? could you flummox? could they flummox?	could I be flummoxing? could you be flummoxing? could she 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 she 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 she 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
could I not flummox? could you not flummox? could she not flummox? could we not flummox? could you not flummox? could they not flummox?	could I not be flummoxing? could you not be flummoxing? could she not be flummoxing? could we not be flummoxing? could you not be flummoxing? could they not be flummoxing?
Perfect	V-ing perfect
could I not have flummoxed? could you not have flummoxed? could she not have flummoxed? could we not have flummoxed? could you not have flummoxed? could they not have flummoxed?	could I not have been flummoxing? could you not have been flummoxing? could she not have been flummoxing? could we not have been flummoxing? could you not have been flummoxing? could they not have been flummoxing?