B3311331313231311331322331333132313233313231333131333132313233313121111111
>>
B331133131323131133132233133313231323331323133313133313231323331312111111
<<
B3311331313231311331322331333132313233313231333131333132313233313121111113
>>
B3311331313231311331322331333132313233313231333131333132313233313121111112
>>