C11112331312111112111133133313331333133313331333133313223313331323132322222311   >>    C1111233131211111211113313331333133313331333133313331322331333132313232222231   <<    C11112331312111112111133133313331333133313331333133313223313331323132322222313   >>      C11112331312111112111133133313331333133313331333133313223313331323132322222312   >>