ColoredKnots.xml

<sequence values="BRW">
  <all in="B" out="R"/>
  <all in="***/***/*** ***/*R*/*** ***/***/***" out="***/***/*** ***/*W*/*** ***/***/***"/>
  <wfc values="BWIPENDAROYGUCKF" tileset="Knots3D" tiles="Knots3D/3">
    <rule in="R" out="Empty"/>
    <rule in="W" out="Line|Turn|Empty"/>
    <markov>
      <all>
        <rule in="IW" out="*I"/>
        <rule in="PW" out="*P"/>
        <rule in="EW" out="*E"/>
        <rule in="NW" out="*N"/>
        <rule in="DW" out="*D"/>
        <rule in="AW" out="*A"/>
        <rule in="RW" out="*R"/>
        <rule in="OW" out="*O"/>
        <rule in="YW" out="*Y"/>
        <rule in="GW" out="*G"/>
        <rule in="UW" out="*U"/>
        <rule in="CW" out="*C"/>
        <rule in="KW" out="*K"/>
        <rule in="FW" out="*F"/>
      </all>
      <one>
        <rule in="W" out="I"/>
        <rule in="W" out="P"/>
        <rule in="W" out="E"/>
        <rule in="W" out="N"/>
        <rule in="W" out="D"/>
        <rule in="W" out="A"/>
        <rule in="W" out="R"/>
        <rule in="W" out="O"/>
        <rule in="W" out="Y"/>
        <rule in="W" out="G"/>
        <rule in="W" out="U"/>
        <rule in="W" out="C"/>
        <rule in="W" out="K"/>
        <rule in="W" out="F"/>
      </one>
    </markov>
  </wfc>
</sequence>

<!--
TODO: To avoid listing rules for all colors, introduce logical expressions like u=(!W)&(!B). Then we can write W=u and maybe even uW=uu.
-->