program Project6;

{$APPTYPE CONSOLE}

uses
  SysUtils;

const
  MAXIN = 11;

var
  n, i, j, k: integer;
  a: array [0..MAXIN, 0..MAXIN] of integer;

procedure wiwod();
var
  i, j: integer;
  time: array [-1..MAXIN] of integer;
begin
  for i := 1 to n do
    time[i] := 0;

  for i := 1 to n do
    for j := 1 to n do
      inc(time[a[i][j]]);

  //for i := 1 to n do
    //if (time[i] <> n) then
      //exit;

  for i := 1 to n do
  begin
    for j := 1 to n - 1 do
      write(a[i][j], ' ');
    writeln(a[i][n]);
  end;

  readln;
  readln;
end;

procedure rec(x, y: integer);
var
  i, j: integer;
  used: array [0..MAXIN] of boolean;
begin
  //inc(k);
  //if (k = 10001) then
    //writeln(K);
  //writeln(a[x][y], ' ',x, ' ',y);
  for i := 1 to n do
    used[i] := true;

  for i := 1 to n do
  begin
    used[a[x][i]] := false;
    used[a[i][y]] := false;
  end;

  if (a[x][y] <> 0) then
    if (x = n) and (y = n) then
      wiwod
    else
      if (y = n) then
        rec(x + 1, 1)
      else
        rec(x, y + 1)
  else
    for i := 1 to n do
      if (used[i]) then
      begin
        a[x][y] := i;
        if (x = n) and (y = n) then
          wiwod
        else
          if (y = n) then
            rec(x + 1, 1)
          else
            rec(x, y + 1);
      end;
  a[x][y] := 0;
end;

begin
  //k := 0;
  readln(n);

  for i := 1 to n do
    for j := 1 to n do
      read(a[i][j]);

  rec(1, 1);
  readln;readln;readln;readln;
end.

10
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0