B3311331313231311331322331333132313231333133313311211113313331333132232131
>>
B331133131323131133132233133313231323133313331331121111331333133313223213
<<
B3311331313231311331322331333132313231333133313311211113313331333132232133
>>
B3311331313231311331322331333132313231333133313311211113313331333132232132
>>