C1111233131211111211113313231333133313331323221211111333133313133313122311   >>    C111123313121111121111331323133313331333132322121111133313331313331312231   <<    C1111233131211111211113313231333133313331323221211111333133313133313122313   >>      C1111233131211111211113313231333133313331323221211111333133313133313122312   >>