C11112331312111112111133132313331333133313232213331333132322132313233311   >>    C1111233131211111211113313231333133313331323221333133313232213231323331   <<    C11112331312111112111133132313331333133313232213331333132322132313233313   >>      C11112331312111112111133132313331333133313232213331333132322132313233312   >>