C11112331312111112111133133313331333132313233313231333131211111323223323311   >>    C1111233131211111211113313331333133313231323331323133313121111132322332331   <<    C11112331312111112111133133313331333132313233313231333131211111323223323313   >>      C11112331312111112111133133313331333132313233313231333131211111323223323312   >>