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snowballstem · Nov 9, 2023 · 94fdb17 · 94fdb17
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diff --git a/algorithms/german/stemmer.html b/algorithms/german/stemmer.html
@@ -317,13 +317,14 @@ <h2>The stemming algorithm</h2>
 <DL><DD>
     Search for the longest among the following suffixes,
         <DL><DD>
-        (<I>a</I>) <B><I>em  &nbsp;  ern  &nbsp;  er</I></B><BR>
-        (<I>b</I>) <B><I>e  &nbsp;  en  &nbsp;  es</I></B><BR>
-        (<I>c</I>) <B><I>s</I></B> (preceded by a valid <B><I>s</I></B>-ending)
+        (<I>a</I>) <B><I>em</I></B> (not preceded by <B><I>syst</I></B> [condition added in Snowball 2.3.0])<BR>
+        (<I>b</I>) <B><I>ern  &nbsp;  er</I></B><BR>
+        (<I>c</I>) <B><I>e  &nbsp;  en  &nbsp;  es</I></B><BR>
+        (<I>d</I>) <B><I>s</I></B> (preceded by a valid <B><I>s</I></B>-ending)
 </DL>
     <p>
     and delete if in <I>R</I>1. (Of course the letter of the valid <B><I>s</I></B>-ending is
-    not necessarily in <I>R</I>1.) If an ending of group (<I>b</I>) is deleted, and the ending
+    not necessarily in <I>R</I>1.) If an ending of group (<I>c</I>) is deleted, and the ending
     is preceded by <B><I>niss</I></B>, delete the final <B><I>s</I></B>.
     </p>
 
@@ -468,7 +469,11 @@ <h2>The same algorithm in Snowball</h2>
 <span class="w">    </span><span class="kr">define</span><span class="w"> </span><span class="n">standard_suffix</span><span class="w"> </span><span class="kr">as</span><span class="w"> </span><span class="p">(</span><span class="w"></span>
 <span class="w">        </span><span class="ow">do</span><span class="w"> </span><span class="p">(</span><span class="w"></span>
 <span class="w">            </span><span class="o">[</span><span class="ow">substring</span><span class="o">]</span><span class="w"> </span><span class="n">R1</span><span class="w"> </span><span class="kr">among</span><span class="p">(</span><span class="w"></span>
-<span class="w">                </span><span class="s1">&#39;em&#39;</span><span class="w"> </span><span class="s1">&#39;ern&#39;</span><span class="w"> </span><span class="s1">&#39;er&#39;</span><span class="w"></span>
+<span class="w">                </span><span class="s1">&#39;em&#39;</span><span class="w"></span>
+<span class="w">                </span><span class="p">(</span><span class="w">   </span><span class="ow">not</span><span class="w"> </span><span class="s1">&#39;syst&#39;</span><span class="w"></span>
+<span class="w">                    </span><span class="ow">delete</span><span class="w"></span>
+<span class="w">                </span><span class="p">)</span><span class="w"></span>
+<span class="w">                </span><span class="s1">&#39;ern&#39;</span><span class="w"> </span><span class="s1">&#39;er&#39;</span><span class="w"></span>
 <span class="w">                </span><span class="p">(</span><span class="w">   </span><span class="ow">delete</span><span class="w"></span>
 <span class="w">                </span><span class="p">)</span><span class="w"></span>
 <span class="w">                </span><span class="s1">&#39;e&#39;</span><span class="w"> </span><span class="s1">&#39;en&#39;</span><span class="w"> </span><span class="s1">&#39;es&#39;</span><span class="w"></span>