C111112111133131121133133313331333133313331323133313331333133311221123231312131   >>    C11111211113313112113313331333133313331333132313331333133313331122112323131213   <<    C111112111133131121133133313331333133313331323133313331333133311221123231312133   >>      C111112111133131121133133313331333133313331323133313331333133311221123231312132   >>