Zufälliges Wort muss mindestens einige definierte Buchstaben enthalten

$wort="123456789abcdefghijklmno"  

$a_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'a'} | Measure-Object).Count  
$b_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'b'} | Measure-Object).Count  
$c_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'c'} | Measure-Object).Count  
$d_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'd'} | Measure-Object).Count  
$e_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'e'} | Measure-Object).Count  
$f_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'f'} | Measure-Object).Count  
$g_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'g'} | Measure-Object).Count  
$h_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'h'} | Measure-Object).Count  
$i_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'i'} | Measure-Object).Count  
$j_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'j'} | Measure-Object).Count  
$k_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'k'} | Measure-Object).Count  
$l_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'l'} | Measure-Object).Count  
$m_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'm'} | Measure-Object).Count  
$n_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'n'} | Measure-Object).Count  
$o_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'o'} | Measure-Object).Count  
$p_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'p'} | Measure-Object).Count  
$q_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'q'} | Measure-Object).Count  
$r_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'r'} | Measure-Object).Count  
$s_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 's'} | Measure-Object).Count  
$t_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 't'} | Measure-Object).Count  
$u_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'u'} | Measure-Object).Count  
$v_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'v'} | Measure-Object).Count  
$w_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'w'} | Measure-Object).Count  
$x_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'x'} | Measure-Object).Count  
$y_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'y'} | Measure-Object).Count  
$z_number=($fixcharacter.tochararray()| Where-Object {$_ -eq 'z'} | Measure-Object).Count  


for($n=0;$n -lt 100;$n++){ #100 words

$m=0
$word=""  

$fixcharacter="irfsfM" #each character at least once  
$numberfixcharacter=$fixcharacter.Length #get number of fixed characters
$positions=Get-Random -InputObject 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23 -Count $numberfixcharacter
#$positions


for($m=0;$m -lt 25; $m++){
    if(!$positions.Contains($m)){
        $character=-join ((65..90) | Get-Random -Count 1 | % {[char]$_})
        $word+=$character
    }else{
       $word+=Get-Random -Inputobject $fixcharacter.ToCharArray()
    }
}


#prüfung
$wordvalid=$true


$a2_number=($word.tochararray()| Where-Object {$_ -eq 'a'} | Measure-Object).Count  
$b2_number=($word.tochararray()| Where-Object {$_ -eq 'b'} | Measure-Object).Count  
$c2_number=($word.tochararray()| Where-Object {$_ -eq 'c'} | Measure-Object).Count  
$d2_number=($word.tochararray()| Where-Object {$_ -eq 'd'} | Measure-Object).Count  
$e2_number=($word.tochararray()| Where-Object {$_ -eq 'e'} | Measure-Object).Count  
$f2_number=($word.tochararray()| Where-Object {$_ -eq 'f'} | Measure-Object).Count  
$g2_number=($word.tochararray()| Where-Object {$_ -eq 'g'} | Measure-Object).Count  
$h2_number=($word.tochararray()| Where-Object {$_ -eq 'h'} | Measure-Object).Count  
$i2_number=($word.tochararray()| Where-Object {$_ -eq 'i'} | Measure-Object).Count  
$j2_number=($word.tochararray()| Where-Object {$_ -eq 'j'} | Measure-Object).Count  
$k2_number=($word.tochararray()| Where-Object {$_ -eq 'k'} | Measure-Object).Count  
$l2_number=($word.tochararray()| Where-Object {$_ -eq 'l'} | Measure-Object).Count  
$m2_number=($word.tochararray()| Where-Object {$_ -eq 'm'} | Measure-Object).Count  
$n2_number=($word.tochararray()| Where-Object {$_ -eq 'n'} | Measure-Object).Count  
$o2_number=($word.tochararray()| Where-Object {$_ -eq 'o'} | Measure-Object).Count  
$p2_number=($word.tochararray()| Where-Object {$_ -eq 'p'} | Measure-Object).Count  
$q2_number=($word.tochararray()| Where-Object {$_ -eq 'q'} | Measure-Object).Count  
$r2_number=($word.tochararray()| Where-Object {$_ -eq 'r'} | Measure-Object).Count  
$s2_number=($word.tochararray()| Where-Object {$_ -eq 's'} | Measure-Object).Count  
$t2_number=($word.tochararray()| Where-Object {$_ -eq 't'} | Measure-Object).Count  
$u2_number=($word.tochararray()| Where-Object {$_ -eq 'u'} | Measure-Object).Count  
$v2_number=($word.tochararray()| Where-Object {$_ -eq 'v'} | Measure-Object).Count  
$w2_number=($word.tochararray()| Where-Object {$_ -eq 'w'} | Measure-Object).Count  
$x2_number=($word.tochararray()| Where-Object {$_ -eq 'x'} | Measure-Object).Count  
$y2_number=($word.tochararray()| Where-Object {$_ -eq 'y'} | Measure-Object).Count  
$z2_number=($word.tochararray()| Where-Object {$_ -eq 'z'} | Measure-Object).Count  

if($a_number -gt $a2_number){$wordvalid=$false}
if($b_number -gt $b2_number){$wordvalid=$false}
if($c_number -gt $c2_number){$wordvalid=$false}
if($d_number -gt $d2_number){$wordvalid=$false}
if($e_number -gt $e2_number){$wordvalid=$false}
if($f_number -gt $f2_number){$wordvalid=$false}
if($g_number -gt $g2_number){$wordvalid=$false}
if($h_number -gt $h2_number){$wordvalid=$false}
if($i_number -gt $i2_number){$wordvalid=$false}
if($j_number -gt $j2_number){$wordvalid=$false}
if($k_number -gt $k2_number){$wordvalid=$false}
if($l_number -gt $l2_number){$wordvalid=$false}
if($m_number -gt $m2_number){$wordvalid=$false}
if($n_number -gt $n2_number){$wordvalid=$false}
if($o_number -gt $o2_number){$wordvalid=$false}
if($p_number -gt $p2_number){$wordvalid=$false}
if($q_number -gt $q2_number){$wordvalid=$false}
if($r_number -gt $r2_number){$wordvalid=$false}
if($s_number -gt $s2_number){$wordvalid=$false}
if($t_number -gt $t2_number){$wordvalid=$false}
if($u_number -gt $u2_number){$wordvalid=$false}
if($v_number -gt $v2_number){$wordvalid=$false}
if($w_number -gt $w2_number){$wordvalid=$false}
if($x_number -gt $x2_number){$wordvalid=$false}
if($y_number -gt $y2_number){$wordvalid=$false}
if($z_number -gt $z2_number){$wordvalid=$false}

if($true -eq $wordvalid){
    $word
}else{
    $n=$n-1
}
}