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 cannot bur you cannot bur he cannot bur we cannot bur you cannot bur they cannot bur	I cannot be buring you cannot be buring he cannot be buring we cannot be buring you cannot be buring they cannot be buring
Perfect	V-ing perfect
I cannot have bured you cannot have bured he cannot have bured we cannot have bured you cannot have bured they cannot have bured	I cannot have been buring you cannot have been buring he cannot have been buring we cannot have been buring you cannot have been buring they cannot 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 I not bur? can you not bur? can he not bur? can we not bur? can you not bur? can they not bur?	can I not be buring? can you not be buring? can he not be buring? can we not be buring? can you not be buring? can they not be buring?
Perfect	V-ing perfect
can I not have bured? can you not have bured? can he not have bured? can we not have bured? can you not have bured? can they not have bured?	can I not have been buring? can you not have been buring? can he not have been buring? can we not have been buring? can you not have been buring? can they not have been buring?