B33113313132313113313223313331311331333131113331333133313232211211
>>
B3311331313231311331322331333131133133313111333133313331323221121
<<
B33113313132313113313223313331311331333131113331333133313232211213
>>
B33113313132313113313223313331311331333131113331333133313232211212
>>