<ul>
<li>Start from RmRmRvLmRvRvLmRv
<li>Close it in a 3x1 vertical rectangle made of a stack of four tiles in the lowest position
and two stacks of two tiles
<li>Open it vertically in a 3x2 rectangle with two stacks of two tiles in the lowest row
<li>Turn the top tile of the right stack of two tiles 180 degrees to the left (valley fold).
<b>Note:</b> act specularly if this move is not possible
<li>Lift up 180 degrees a pair of adjacent tiles
<li>Open in the final shape
</ul>