B3311331313231311331322331333132313233313231333131121333132313331323123232211
>>
B331133131323131133132233133313231323331323133313112133313231333132312323221
<<
B3311331313231311331322331333132313233313231333131121333132313331323123232213
>>
B3311331313231311331322331333132313233313231333131121333132313331323123232212
>>