a
b
c
a
b
c
a
1
a
b
c
&lt;&amp;&gt;
&amp;lt;&amp;amp;&amp;gt;
&lt;&amp;&gt;
---
<Mooo> = <Mooo>
  <MOOO> = <MOOO>
    &LT;MOOO&GT; = &lt;MOOO&gt;
      <MOOO> = <MOOO>
    &LT;MOOO&GT; = &lt;MOOO&gt;
  <MOOO> = <MOOO>
    <Mooo> = <Mooo>
      &lt;Mooo&gt; = &lt;Mooo&gt;
        <Mooo> = <Mooo>
      &lt;Mooo&gt; = &lt;Mooo&gt;
    <Mooo> = <Mooo>
  <MOOO> = <MOOO>
  red green blue
---