DOCBOOK: variablelist

Hi,

Is it possible to use variablelist in the variablelist tag or is there
something else

this is what I want

ABC:
	bla bla

	DEF:
		bla bla

GH
	bla bla

	
<variablelist>
	<varlistentry><term> Some word  </term >
	<listitem> <para>
	bla bla bla </para>
		
		<variablelist>
		<varlistentry><term> New word </term>
		<listitem><para>
		bla bla </para>
		</listitem> </varlistentry>

		<varlisentry><term> Another word </term>
		<listitem><para>
		bla bla </para>
		</listitem>
		</varlistentry>
		</variablelist>
	</listem>
	</varlistentry>
</variablelist>	


TIA
-- 
Togan Muftuoglu