English verb conjugation
CAN BUR

Regular verb: bur - bured - bured

Affirmation

Simple form	V-ing form
I can bur you can bur he can bur we can bur you can bur they can bur	I can be buring you can be buring he can be buring we can be buring you can be buring they can be buring
Perfect	V-ing perfect
I can have bured you can have bured he can have bured we can have bured you can have bured they can have bured	I can have been buring you can have been buring he can have been buring we can have been buring you can have been buring they can have been buring

Negation

Simple form	V-ing form
I can't bur you can't bur he can't bur we can't bur you can't bur they can't bur	I can't be buring you can't be buring he can't be buring we can't be buring you can't be buring they can't be buring
Perfect	V-ing perfect
I can't have bured you can't have bured he can't have bured we can't have bured you can't have bured they can't have bured	I can't have been buring you can't have been buring he can't have been buring we can't have been buring you can't have been buring they can't have been buring

Interrogative form

Simple form	V-ing form
can I bur? can you bur? can he bur? can we bur? can you bur? can they bur?	can I be buring? can you be buring? can he be buring? can we be buring? can you be buring? can they be buring?
Perfect	V-ing perfect
can I have bured? can you have bured? can he have bured? can we have bured? can you have bured? can they have bured?	can I have been buring? can you have been buring? can he have been buring? can we have been buring? can you have been buring? can they have been buring?

Interro-negative form

Simple form	V-ing form
can't I bur? can't you bur? can't he bur? can't we bur? can't you bur? can't they bur?	can't I be buring? can't you be buring? can't he be buring? can't we be buring? can't you be buring? can't they be buring?
Perfect	V-ing perfect
can't I have bured? can't you have bured? can't he have bured? can't we have bured? can't you have bured? can't they have bured?	can't I have been buring? can't you have been buring? can't he have been buring? can't we have been buring? can't you have been buring? can't they have been buring?