C11112331312111112111133133313331333132323133313331333133321123233111   >>    C1111233131211111211113313331333133313232313331333133313332112323311   <<    C11112331312111112111133133313331333132323133313331333133321123233113   >>      C11112331312111112111133133313331333132323133313331333133321123233112   >>