r4 A B vA r4 D x r4 D E vB vD vE r4 A B vA r4 D r4 E vB D removal The right page has to be completed Initial tree vE r4 A B vA r4 D E vB vE We merge the two siblings r5 A B vA r5 x E vB And reorganize the pages x x ??? vE