C11112331312111112111133133313331333133313122111133133313113313331333132221121   >>    C1111233131211111211113313331333133313331312211113313331311331333133313222112   <<    C11112331312111112111133133313331333133313122111133133313113313331333132221123   >>      C11112331312111112111133133313331333133313122111133133313113313331333132221122   >>