A request XML packet retrieving a pattern includes the get-patterns operation node:
<packet version="1.4.2.0">
<spamfilter>
<get-patterns>
...
</get-patterns>
</spamfilter>
</packet>
The get-patterns node is presented by the SpamFilterGetPatternsInputType type (spamfilter.xsd), and its graphical representation is as follows:

spamfilter.xsd).spamfilter.xsd). Allowed values: black | white | unblack | unwhite.
Remarks
You can retrieve multiple lists for users specified by different filtering rules in a single packet. Add as many get-patterns operations as the number of different filtering rules to be applied.
<get-patterns>
...
</get-patterns>
...
<get-patterns>
...
</get-patterns>