C11112331312111112111133133313331333133313122111133133313223311231331   >>    C1111233131211111211113313331333133313331312211113313331322331123133   <<    C11112331312111112111133133313331333133313122111133133313223311231333   >>      C11112331312111112111133133313331333133313122111133133313223311231332   >>