C11112331312111112111133133313331333132323133313331333133211331312111   >>    C1111233131211111211113313331333133313232313331333133313321133131211   <<    C11112331312111112111133133313331333132323133313331333133211331312113   >>      C11112331312111112111133133313331333132323133313331333133211331312112   >>