C1111233131211111211113313331333133313232313331333133313332313331323313121   >>    C111123313121111121111331333133313331323231333133313331333231333132331312   <<    C1111233131211111211113313331333133313232313331333133313332313331323313123   >>      C1111233131211111211113313331333133313232313331333133313332313331323313122   >>