C1111233131211111211113313331333133313331333133313331333133313122332313321   >>    C111123313121111121111331333133313331333133313331333133313331312233231332   <<    C1111233131211111211113313331333133313331333133313331333133313122332313323   >>      C1111233131211111211113313331333133313331333133313331333133313122332313322   >>