<?php
fscanf(STDIN, "%s", $first_player);
for($i=0; $i<8; $i++){
    $b[] = fscanf(STDIN, "%s");
}
$players = array('oda'=>'oda','yukiko'=>'yukiko');

$total = 0;
$black_total = 0;
$white_total = 0;
foreach($b as $val){
    $black_total += substr_count($val[0],'b');
    $white_total += substr_count($val[0],'w');
}
$total = ($black_total + $white_total);
if($total%2 === 0){
    echo $first_player;
}else{
    unset($players[$first_player]);
    echo array_shift($players);
}

echo "\n";

?>