C11112331312111112111133133313331333131211111333133313331323221323311   >>    C1111233131211111211113313331333133313121111133313331333132322132331   <<    C11112331312111112111133133313331333131211111333133313331323221323313   >>      C11112331312111112111133133313331333131211111333133313331323221323312   >>