C111123313121111121111331333133313331333132232233131211111333131121123313331311   >>    C11112331312111112111133133313331333133313223223313121111133313112112331333131   <<    C111123313121111121111331333133313331333132232233131211111333131121123313331313   >>      C111123313121111121111331333133313331333132232233131211111333131121123313331312   >>