<ul>
<li>Start from MRUmRUvUmDvUvDv
<li>Close in a 2x2 square by <i>pocketing</i> two of the four tiles forming the ring
(those on top and in the right with respect to the figure),
the 2x2 square has a stack of four tiles in the South-West position,
and a stack of two tiles in the North-West position.
<li>Lift in vertical position the top two tiles in the SW stack.
<li>Open in 3D with the following choice of hinges:
<ul>
<li>The two vertical tiles about their vertical East side
<li>The two stacked SW tiles about their South side
<li>The two stacked NW tiles about their West side
<li>slightly fold the two East tiles with a valley fold
between each other and a mountain fold about the West tiles.
</ul>
</ul>