e-width="2" d="M1906,-157.38C1970,-157.38 1986,-156.38 2050,-156.38"/>
<path fill="none" stroke="#000000" stroke-width="2" d="M1906,-159.37C1970.13,-159.37 1986.12,-158.37 2050,-158.37"/>
</g>
<!-- X3&#45;&#45;W3 -->
<g id="edge31" class="edge">
<title>X3:e&#45;&#45;W3:w</title>
<path fill="none" stroke="#000000" stroke-width="2" d="M1906,-132.38C1969.64,-132.41 1985.62,-129.41 2050,-129.38"/>
<path fill="none" stroke="#ffff00" stroke-width="2" d="M1906,-134.38C1970.01,-134.37 1985.99,-131.37 2050,-131.38"/