C11112331312111112111133133313331333133313331333133313331333131111222121   >>    C1111233131211111211113313331333133313331333133313331333133313111122212   <<    C11112331312111112111133133313331333133313331333133313331333131111222123   >>      C11112331312111112111133133313331333133313331333133313331333131111222122   >>