C11112331312111112111133133313331333133313113233231333133313233113322311   >>    C1111233131211111211113313331333133313331311323323133313331323311332231   <<    C11112331312111112111133133313331333133313113233231333133313233113322313   >>      C11112331312111112111133133313331333133313113233231333133313233113322312   >>