B33113313132313113313223313331311331333131113331333133313232211121   >>    B3311331313231311331322331333131133133313111333133313331323221112   <<    B33113313132313113313223313331311331333131113331333133313232211123   >>      B33113313132313113313223313331311331333131113331333133313232211122   >>