C11112331312111112111133133313331333132323213331333132311311211   >>    C1111233131211111211113313331333133313232321333133313231131121   <<    C11112331312111112111133133313331333132323213331333132311311213   >>      C11112331312111112111133133313331333132323213331333132311311212   >>