C11112331312111112111133133313331333133313331333133313331333132322132222121   >>    C1111233131211111211113313331333133313331333133313331333133313232213222212   <<    C11112331312111112111133133313331333133313331333133313331333132322132222123   >>      C11112331312111112111133133313331333133313331333133313331333132322132222122   >>