SmartSAW.xml

<sequence values="BRDYGWEUN" origin="True">
  <union symbol="?" values="BD"/>
  <union symbol="_" values="BN"/>
  <all>
    <rule in="RBB" out="**D"/>
    <rule in="DBB" out="**D"/>
  </all>
  <markov>
    <markov>
      <markov>
        <one in="Y_D" out="UEG"/>
        <one in="YWW" out="DNR"/>
      </markov>
      <all in="G_D" out="*EG"/>
      <markov>
        <one in="RBD" out="WWY"/>
        <one in="RWW" out="DNR"/>
      </markov>
      <sequence>
        <one in="**D/**_/WWU" out="***/***/RND"/>
        <all>
          <rule in="*_*/_G_" out="***/*D*"/>
          <rule in="*?*/?E?" out="***/*B*"/>
          <rule in="*_*/_U_" out="***/*R*"/>
        </all>
      </sequence>
    </markov>
    <prl in="N" out="B"/>
  </markov>
</sequence>

<!--
I was trying to implement depth-first search with early exit in MJ, and made this.

It goes much further than the naive self-avoiding walk.
-->