C111113331333132322331333133313331333133313121111331333132313331333132313223111   >>    C11111333133313232233133313331333133313331312111133133313231333133313231322311   <<    C111113331333132322331333133313331333133313121111331333132313331333132313223113   >>      C111113331333132322331333133313331333133313121111331333132313331333132313223112   >>