B331133131323131133132233133313233313331323133211331333133313231123312121
>>
B33113313132313113313223313331323331333132313321133133313331323112331212
<<
B331133131323131133132233133313233313331323133211331333133313231123312123
>>
B331133131323131133132233133313233313331323133211331333133313231123312122
>>