B33113313132313113313223313331311331333132332132313331333131133132322121212131   >>    B3311331313231311331322331333131133133313233213231333133313113313232212121213   <<    B33113313132313113313223313331311331333132332132313331333131133132322121212133   >>      B33113313132313113313223313331311331333132332132313331333131133132322121212132   >>