C11112331312111112111133132313331333133313233313331312111133133313223313222311   >>    C1111233131211111211113313231333133313331323331333131211113313331322331322231   <<    C11112331312111112111133132313331333133313233313331312111133133313223313222313   >>      C11112331312111112111133132313331333133313233313331312111133133313223313222312   >>