C11112331312111112111133132313331333133313233313331323231112311   >>    C1111233131211111211113313231333133313331323331333132323111231   <<    C11112331312111112111133132313331333133313233313331323231112313   >>      C11112331312111112111133132313331333133313233313331323231112312   >>