English verb conjugation
CAN FEOFF

Regular verb: feoff - feoffed - feoffed

Affirmation

Simple form	V-ing form
I can feoff you can feoff he can feoff we can feoff you can feoff they can feoff	I can be feoffing you can be feoffing he can be feoffing we can be feoffing you can be feoffing they can be feoffing
Perfect	V-ing perfect
I can have feoffed you can have feoffed he can have feoffed we can have feoffed you can have feoffed they can have feoffed	I can have been feoffing you can have been feoffing he can have been feoffing we can have been feoffing you can have been feoffing they can have been feoffing

Negation

Simple form	V-ing form
I can't feoff you can't feoff he can't feoff we can't feoff you can't feoff they can't feoff	I can't be feoffing you can't be feoffing he can't be feoffing we can't be feoffing you can't be feoffing they can't be feoffing
Perfect	V-ing perfect
I can't have feoffed you can't have feoffed he can't have feoffed we can't have feoffed you can't have feoffed they can't have feoffed	I can't have been feoffing you can't have been feoffing he can't have been feoffing we can't have been feoffing you can't have been feoffing they can't have been feoffing

Interrogative form

Simple form	V-ing form
can I feoff? can you feoff? can he feoff? can we feoff? can you feoff? can they feoff?	can I be feoffing? can you be feoffing? can he be feoffing? can we be feoffing? can you be feoffing? can they be feoffing?
Perfect	V-ing perfect
can I have feoffed? can you have feoffed? can he have feoffed? can we have feoffed? can you have feoffed? can they have feoffed?	can I have been feoffing? can you have been feoffing? can he have been feoffing? can we have been feoffing? can you have been feoffing? can they have been feoffing?

Interro-negative form

Simple form	V-ing form
can't I feoff? can't you feoff? can't he feoff? can't we feoff? can't you feoff? can't they feoff?	can't I be feoffing? can't you be feoffing? can't he be feoffing? can't we be feoffing? can't you be feoffing? can't they be feoffing?
Perfect	V-ing perfect
can't I have feoffed? can't you have feoffed? can't he have feoffed? can't we have feoffed? can't you have feoffed? can't they have feoffed?	can't I have been feoffing? can't you have been feoffing? can't he have been feoffing? can't we have been feoffing? can't you have been feoffing? can't they have been feoffing?