<ul>
<li>Start from RRURRmLvUmUv
<li>Close into a 2x3 rectangle with
 <ul>
  <li>two stacks of two tiles in the East positions
  <li>the South-West tile is of type <i>backslash</i>
  <li>six tiles are located at the first floor, two tiles (East) are located
      at the second floor
 </ul>
<li>Rotate down 180 degrees with a mountain fold the two West tiles, obtaining
a 2x2 square
<li>Slightly open in 3D with the following hingings
 <ul>
  <li>North-East stack: north side <b>Revert North with South from here on if this is not possible</b>
  <li>South-East stack: east side
  <li>North-West stack: west side
  <li>South-West stack: south side
  <li>mountain fold 180 degrees between the NW and NE tiles
  <li>mountain fold 90 degrees between the NE and SE tiles,
  <li>mountain fold 90 degrees between the SW and SE tiles,
  <li>valley fold 90 degrees between the NW and SW tiles
 </ul>
<li>End up with a cube having two stacks of two tiles in opposite sides (West and East)
<li>The flap in the East stack can be rotated 270 degrees against the upper side of the cube
<li>Reopen by changing the hinging side in the West stack into the final shape
</ul>