C1111233131211111211113313331333133313331333133313331333133313331321123222211   >>    C111123313121111121111331333133313331333133313331333133313331333132112322221   <<    C1111233131211111211113313331333133313331333133313331333133313331321123222213   >>      C1111233131211111211113313331333133313331333133313331333133313331321123222212   >>