><span class="w"> </span><span class="n">p2</span><span class="p">,</span><span class="w"> </span><span class="n">pf0</span><span class="p">,</span><span class="w"> </span><span class="n">Ppf</span><span class="p">,</span><span class="w"> </span><span class="n">sd</span><span class="p">,</span><span class="w"> </span><span class="n">x0</span><span class="p">,</span><span class="w"> </span><span class="n">x1</span><span class="p">,</span><span class="w"> </span><span class="n">x2</span><span class="p">,</spa