English verb conjugation
CAN SHEAF

Regular verb: sheaf - sheafed - sheafed

Affirmation

Simple form	V-ing form
I can sheaf you can sheaf he can sheaf we can sheaf you can sheaf they can sheaf	I can be sheafing you can be sheafing he can be sheafing we can be sheafing you can be sheafing they can be sheafing
Perfect	V-ing perfect
I can have sheafed you can have sheafed he can have sheafed we can have sheafed you can have sheafed they can have sheafed	I can have been sheafing you can have been sheafing he can have been sheafing we can have been sheafing you can have been sheafing they can have been sheafing

Negation

Simple form	V-ing form
I can't sheaf you can't sheaf he can't sheaf we can't sheaf you can't sheaf they can't sheaf	I can't be sheafing you can't be sheafing he can't be sheafing we can't be sheafing you can't be sheafing they can't be sheafing
Perfect	V-ing perfect
I can't have sheafed you can't have sheafed he can't have sheafed we can't have sheafed you can't have sheafed they can't have sheafed	I can't have been sheafing you can't have been sheafing he can't have been sheafing we can't have been sheafing you can't have been sheafing they can't have been sheafing

Interrogative form

Simple form	V-ing form
can I sheaf? can you sheaf? can he sheaf? can we sheaf? can you sheaf? can they sheaf?	can I be sheafing? can you be sheafing? can he be sheafing? can we be sheafing? can you be sheafing? can they be sheafing?
Perfect	V-ing perfect
can I have sheafed? can you have sheafed? can he have sheafed? can we have sheafed? can you have sheafed? can they have sheafed?	can I have been sheafing? can you have been sheafing? can he have been sheafing? can we have been sheafing? can you have been sheafing? can they have been sheafing?

Interro-negative form

Simple form	V-ing form
can't I sheaf? can't you sheaf? can't he sheaf? can't we sheaf? can't you sheaf? can't they sheaf?	can't I be sheafing? can't you be sheafing? can't he be sheafing? can't we be sheafing? can't you be sheafing? can't they be sheafing?
Perfect	V-ing perfect
can't I have sheafed? can't you have sheafed? can't he have sheafed? can't we have sheafed? can't you have sheafed? can't they have sheafed?	can't I have been sheafing? can't you have been sheafing? can't he have been sheafing? can't we have been sheafing? can't you have been sheafing? can't they have been sheafing?