English verb conjugation
CAN FIFE

Regular verb: fife - fifed - fifed

Affirmation

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

Negation

Simple form	V-ing form
I can't fife you can't fife he can't fife we can't fife you can't fife they can't fife	I can't be fifing you can't be fifing he can't be fifing we can't be fifing you can't be fifing they can't be fifing
Perfect	V-ing perfect
I can't have fifed you can't have fifed he can't have fifed we can't have fifed you can't have fifed they can't have fifed	I can't have been fifing you can't have been fifing he can't have been fifing we can't have been fifing you can't have been fifing they can't have been fifing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I fife? can't you fife? can't he fife? can't we fife? can't you fife? can't they fife?	can't I be fifing? can't you be fifing? can't he be fifing? can't we be fifing? can't you be fifing? can't they be fifing?
Perfect	V-ing perfect
can't I have fifed? can't you have fifed? can't he have fifed? can't we have fifed? can't you have fifed? can't they have fifed?	can't I have been fifing? can't you have been fifing? can't he have been fifing? can't we have been fifing? can't you have been fifing? can't they have been fifing?