$data = mb_strtolower($data,'UTF-8');

$days = explode("\n", $data);
$days = array_reverse($days);

foreach($days as $dn => $day)
{
    $words = explode(' ', $day);
    $wc = Array();

    foreach($words as $word)
    {
        if(mb_strlen($word,'UTF-8') > 3 && !in_array($word, Array('kato', 'taka', 'shte', 'kude', 'kakto', 'като', 'защо','носи','some')))
        {
            if(!isset($wc[$word])) $wc[$word] = 0;

            $wc[$word]++;
        }
    }

    arsort($wc);
    $wk = array_keys($wc);

    if(!count($wc)) continue;

    echo "<div style=\" float: left; margin: 5px; padding: 10px; width: 120px; height: 200px; box-sizing: border-box;\"><h3>Day ".($dn+1).'</h3>';
    for($i=0;$i<7 && $i < count($wc);$i++) {
        echo "{$wk[$i]}: {$wc[$wk[$i]]}<br/>";
    }
    echo "</div>";
}