C11112331312111112111133133313331333132323133313331333221333132212111   >>    C1111233131211111211113313331333133313232313331333133322133313221211   <<    C11112331312111112111133133313331333132323133313331333221333132212113   >>      C11112331312111112111133133313331333132323133313331333221333132212112   >>