C11112331312111112111133133313331333132323133313331311132313233223331   >>    C1111233131211111211113313331333133313232313331333131113231323322333   <<    C11112331312111112111133133313331333132323133313331311132313233223333   >>      C11112331312111112111133133313331333132323133313331311132313233223332   >>