C11112331312111112111133133313331333132213221211113313331312231   >>    C1111233131211111211113313331333133313221322121111331333131223   <<    C11112331312111112111133133313331333132213221211113313331312233   >>      C11112331312111112111133133313331333132213221211113313331312232   >>