#include <iostream>

using namespace std;
int board[9][9];
bool check(int key,int row,int col)
{
    int Srow = (row/3)*3,Scol = (col/3)*3;
    for(int i = Srow ; i < (Srow+3) ;i++)
        for(int j = Scol;j<(Scol+3);j++)
            if(board[i][j] == key)return false;
    for(int i = 0 ; i < 9 ; i++)
        if(board[row][i] == key)return false;
    for(int i = 0 ; i < 9 ;i++)
        if(board[i][col] == key)return false;
    return true;
}
void backtrack(int x,int y)
{
    if(x == 9 && y == 8)
    {
        for(int i = 0 ; i < 9 ; i++)
        {
            for(int j = 0 ; j < 9 ; j++)
                cout << board[i][j] << " ";
            cout << endl;
        }
        return;
    }
    if(x == 9)
    {
        backtrack(0,y+1);
        return;
    }
    for(int i = 1 ; i <= 9 ; i++)
    {
        if(board[x][y] == 0)
            if(check(i,x,y))
            {
                board[x][y] = i;
                backtrack(x+1,y);
                board[x][y] = 0;
            }
    }
}
int main()
{
    for(int i = 0 ; i < 9 ; i++)
        for(int j = 0 ; j < 9 ; j++)
            cin >> board[i][j];
    backtrack(0,0);
}