C111112111133131121133133313331333133313331323221211111211113313331312312121   >>    C11111211113313112113313331333133313331333132322121111121111331333131231212   <<    C111112111133131121133133313331333133313331323221211111211113313331312312123   >>      C111112111133131121133133313331333133313331323221211111211113313331312312122   >>