C11112331312111112111133133313331333133313331333133313331333223313121121   >>    C1111233131211111211113313331333133313331333133313331333133322331312112   <<    C11112331312111112111133133313331333133313331333133313331333223313121123   >>      C11112331312111112111133133313331333133313331333133313331333223313121122   >>