C11112331312111112111133133313331333132323213331333131231123221   >>    C1111233131211111211113313331333133313232321333133313123112322   <<    C11112331312111112111133133313331333132323213331333131231123223   >>      C11112331312111112111133133313331333132323213331333131231123222   >>