C11112331312111112111133133313331333132323133313331333133321113231121   >>    C1111233131211111211113313331333133313232313331333133313332111323112   <<    C11112331312111112111133133313331333132323133313331333133321113231123   >>      C11112331312111112111133133313331333132323133313331333133321113231122   >>