l>    ,</span><span class=comment> </span><span class=identifier>chlit</span><span class=special>&lt;&gt;  </span><span class=comment>//  k
            </span><span class=special>&gt;
        &gt;
    </span><span class=identifier>rule_t</span><span class=special>;

    </span><span class=identifier>rule_t r </span><span class=special>= </span><span class=identifier>i </span><span class=special>| </span><span class=identifier>j </span><span class=special>&gt;&gt; </span><span class=identifier>k</span><span 