B33113313132313113313223313331311331333131113331333133313233313232221123121   >>    B3311331313231311331322331333131133133313111333133313331323331323222112312   <<    B33113313132313113313223313331311331333131113331333133313233313232221123123   >>      B33113313132313113313223313331311331333131113331333133313233313232221123122   >>