English verb conjugation
COULD FIFE

Regular verb: fife - fifed - fifed

Affirmation

Simple form	V-ing form
I could fife you could fife he could fife we could fife you could fife they could fife	I could be fifing you could be fifing he could be fifing we could be fifing you could be fifing they could be fifing
Perfect	V-ing perfect
I could have fifed you could have fifed he could have fifed we could have fifed you could have fifed they could have fifed	I could have been fifing you could have been fifing he could have been fifing we could have been fifing you could have been fifing they could have been fifing

Negation

Simple form	V-ing form
I could not fife you could not fife he could not fife we could not fife you could not fife they could not fife	I could not be fifing you could not be fifing he could not be fifing we could not be fifing you could not be fifing they could not be fifing
Perfect	V-ing perfect
I could not have fifed you could not have fifed he could not have fifed we could not have fifed you could not have fifed they could not have fifed	I could not have been fifing you could not have been fifing he could not have been fifing we could not have been fifing you could not have been fifing they could not have been fifing

Interrogative form

Simple form	V-ing form
could I fife? could you fife? could he fife? could we fife? could you fife? could they fife?	could I be fifing? could you be fifing? could he be fifing? could we be fifing? could you be fifing? could they be fifing?
Perfect	V-ing perfect
could I have fifed? could you have fifed? could he have fifed? could we have fifed? could you have fifed? could they have fifed?	could I have been fifing? could you have been fifing? could he have been fifing? could we have been fifing? could you have been fifing? could they have been fifing?

Interro-negative form

Simple form	V-ing form
could I not fife? could you not fife? could he not fife? could we not fife? could you not fife? could they not fife?	could I not be fifing? could you not be fifing? could he not be fifing? could we not be fifing? could you not be fifing? could they not be fifing?
Perfect	V-ing perfect
could I not have fifed? could you not have fifed? could he not have fifed? could we not have fifed? could you not have fifed? could they not have fifed?	could I not have been fifing? could you not have been fifing? could he not have been fifing? could we not have been fifing? could you not have been fifing? could they not have been fifing?