English verb conjugation
CAN FIFE

Regular verb: fife - fifed - fifed

Affirmation

Simple form	V-ing form
I can fife you can fife she can fife we can fife you can fife they can fife	I can be fifing you can be fifing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she fife? can we fife? can you fife? can they fife?	can I be fifing? can you be fifing? can she 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 she 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 she 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 she 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 she 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 she 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 she have been fifing? can't we have been fifing? can't you have been fifing? can't they have been fifing?