C111112111133131121133133313331333133313331312111133132332212121   >>    C11111211113313112113313331333133313331333131211113313233221212   <<    C111112111133131121133133313331333133313331312111133132332212123   >>      C111112111133131121133133313331333133313331312111133132332212122   >>