C111112111133131121133133313331333133313231333131121133133313331322232212111   >>    C11111211113313112113313331333133313331323133313112113313331333132223221211   <<    C111112111133131121133133313331333133313231333131121133133313331322232212113   >>      C111112111133131121133133313331333133313231333131121133133313331322232212112   >>