C11112331312111112111133133313331333133313132211312111133132332111121   >>    C1111233131211111211113313331333133313331313221131211113313233211112   <<    C11112331312111112111133133313331333133313132211312111133132332111123   >>      C11112331312111112111133133313331333133313132211312111133132332111122   >>