C11112331312111112111133133313331333132323213331333133313331311211112323131   >>    C1111233131211111211113313331333133313232321333133313331333131121111232313   <<    C11112331312111112111133133313331333132323213331333133313331311211112323133   >>      C11112331312111112111133133313331333132323213331333133313331311211112323132   >>