C11112331312111112111133133313331333133313331333133313331211111333131112321   >>    C1111233131211111211113313331333133313331333133313331333121111133313111232   <<    C11112331312111112111133133313331333133313331333133313331211111333131112323   >>      C11112331312111112111133133313331333133313331333133313331211111333131112322   >>