C1111233131211111211113313331333133313133313231211111333132323123231   >>    C111123313121111121111331333133313331313331323121111133313232312323   <<    C1111233131211111211113313331333133313133313231211111333132323123233   >>      C1111233131211111211113313331333133313133313231211111333132323123232   >>