B3311331313231311331322331333132313113313131333132313231333132313232212231
>>
B331133131323131133132233133313231311331313133313231323133313231323221223
<<
B3311331313231311331322331333132313113313131333132313231333132313232212233
>>
B3311331313231311331322331333132313113313131333132313231333132313232212232
>>