#include <iostream>
#include <fstream>
#include <string.h>

using namespace std;

int main()
{

 ifstream read_file;
 read_file.open("D:\\text.txt");
 char output[100];

 while (!read_file.eof())
 {
    read_file >> output;
    if(strlen(output)==2 && output[0]>='0' && output[0]<='9' && output[1]>='0' && output[1]<='9')
        cout<<output<<"\n";
 }

  read_file.close();
  return 0;
}