<?xml version="1.0"?>
<proof mode="standard" version="1.000000">
 <goals>
  <goal t="(A | B) | C"/>
  <goal t="A | (B | C)"/>
 </goals>
 <premises>
  <entry n="1" t="A | B"/>
  <entry n="2" t="A"/>
 </premises>
 <conclusions>
  <entry n="3" l="1" r="1" d="0" t="(A | B) | C"/>
  <entry n="4" l="1" r="2" d="0" t="A | (B | C)"/>
 </conclusions>
</proof>
