<ul>
<li>Start from RUmRDmUvUmUvDm
<li>Flatten into a 2x2 square with two stacks of three tiles each on the left
and two single tiles on the right
<li>Lift vertically the two top tiles on the left
<li>Open in 3D with the following choice of hinges:
<ul>
<li>The two vertical tiles about their vertical right side
<li>The two stacked lower-left tiles about their left side
<li>The two stacked upper-left tiles about their top side
<li>slightly fold the two right tiles with a valley fold
between each other and a mountain fold about the left tiles.
</ul>
</ul>