<?php
 
fscanf(STDIN, "%d\n", $tc);
 
for($t=0; $t<$tc; $t++)
{
  fscanf(STDIN, "%d %d", $x, $y);
 // $y = trim(fgets(STDIN));
 // $z = trim(fgets(STDIN));
 
  for($i=0; $i<$x; $i++)
  {
    // $ax[] = trim(fgets(STDIN));
    fscanf(STDIN,"%d", $ax[]);
  }
 
  for($j=0; $j<$y; $j++)
  {
      //$ay[] = trim(fgets(STDIN));
      fscanf(STDIN,"%d", $by[]);
  }
 
  for($i=0; $i<$x; $i++)
  {
     printf("%d ", $ax[$i]);
  }
  echo "\n";
  for($k=0; $k<$y; $k++)
  {
     printf("%d ", $ay[$k]);
  }
 
 }
?>

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