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+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="6.9525447"
+ y="65.279381"
+ id="text3707-5"><tspan
+ sodipodi:role="line"
+ id="tspan3705-4"
+ style="fill:#000000;stroke-width:0.264583"
+ x="6.9525447"
+ y="65.279381">$write(\{b\})$:</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="59.340172"
+ y="118.94403"
+ id="text3707-5-3"><tspan
+ sodipodi:role="line"
+ id="tspan3705-4-6"
+ style="fill:#000000;stroke-width:0.264583"
+ x="59.340172"
+ y="118.94403">$read()$:</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#999999;stroke-width:0.264583"
+ x="23.457415"
+ y="75.619804"
+ id="text3750-7"><tspan
+ sodipodi:role="line"
+ id="tspan3748-4"
+ style="fill:#999999;stroke-width:0.264583"
+ x="23.457415"
+ y="75.619804">$\not\sqsupseteq \{b\}$</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="23.457415"
+ y="84.598038"
+ id="text3750-3-4"><tspan
+ sodipodi:role="line"
+ id="tspan3748-2-3"
+ style="fill:#000000;stroke-width:0.264583"
+ x="23.457415"
+ y="84.598038">$\sqsupseteq \{b\} \to$ OK</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#999999;stroke-width:0.264583"
+ x="23.457415"
+ y="93.54969"
+ id="text3750-0-0"><tspan
+ sodipodi:role="line"
+ id="tspan3748-6-7"
+ style="fill:#999999;stroke-width:0.264583"
+ x="23.457415"
+ y="93.54969">$\not\sqsupseteq \{b\}$</tspan></text>
+ <circle
+ style="fill:#800080;stroke:none;stroke-width:0.499999;stroke-dasharray:none;stop-color:#000000"
+ id="path3663-6"
+ cx="118.63729"
+ cy="67.630196"
+ r="2.7302806" />
+ <circle
+ style="fill:#800080;stroke:none;stroke-width:0.499999;stroke-dasharray:none;stop-color:#000000"
+ id="path3663-6-6-0"
+ cx="67.201363"
+ cy="124.91125"
+ r="2.7302806" />
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="72.653946"
+ y="127.6125"
+ id="text3750-9"><tspan
+ sodipodi:role="line"
+ id="tspan3748-3"
+ style="fill:#000000;stroke-width:0.264583"
+ x="72.653946"
+ y="127.6125">$\to \{a\}$</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="62.764446"
+ y="146.3129"
+ id="text4280-6"><tspan
+ sodipodi:role="line"
+ style="fill:#000000;stroke-width:0.264583"
+ x="62.764446"
+ y="146.3129"
+ id="tspan2630">return $\{a\}$</tspan></text>
+ <circle
+ style="fill:#ff0000;stroke:none;stroke-width:0.499999;stroke-dasharray:none;stop-color:#000000"
+ id="path3663-3-0-7"
+ cx="67.201363"
+ cy="133.94179"
+ r="2.7302806" />
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="72.653946"
+ y="136.59073"
+ id="text3750-3-6"><tspan
+ sodipodi:role="line"
+ id="tspan3748-2-0"
+ style="fill:#000000;stroke-width:0.264583"
+ x="72.653946"
+ y="136.59073">$\to \{\}$</tspan></text>
+ <circle
+ style="fill:#ff0000;stroke:none;stroke-width:0.499999;stroke-dasharray:none;stop-color:#000000"
+ id="path3663-6-6-0-6"
+ cx="174.36296"
+ cy="124.91125"
+ r="2.7302806" />
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="179.81555"
+ y="127.6125"
+ id="text3750-9-1"><tspan
+ sodipodi:role="line"
+ id="tspan3748-3-8"
+ style="fill:#000000;stroke-width:0.264583"
+ x="179.81555"
+ y="127.6125">$\to \{\}$</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="162.7999"
+ y="118.94403"
+ id="text3707-5-3-7"><tspan
+ sodipodi:role="line"
+ id="tspan3705-4-6-5"
+ style="fill:#000000;stroke-width:0.264583"
+ x="162.7999"
+ y="118.94403">$read()$:</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;stroke-width:0.264583"
+ x="134.97845"
+ y="132.58472"
+ id="text3899"><tspan
+ sodipodi:role="line"
+ id="tspan3897"
+ style="stroke-width:0.264583"
+ x="134.97845"
+ y="132.58472">;</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="169.92604"
+ y="146.3129"
+ id="text4280-6-7"><tspan
+ sodipodi:role="line"
+ style="fill:#000000;stroke-width:0.264583"
+ x="169.92604"
+ y="146.3129"
+ id="tspan2630-9">return $\{b\}$</tspan></text>
+ <circle
+ style="fill:#008000;stroke:none;stroke-width:0.499999;stroke-dasharray:none;stop-color:#000000"
+ id="path3663-3-0-7-2"
+ cx="174.36296"
+ cy="133.94179"
+ r="2.7302806" />
+ <text
+ xml:space="preserve"
+ style="font-size:8.46667px;line-height:1.25;font-family:sans-serif;fill:#000000;stroke-width:0.264583"
+ x="179.81555"
+ y="136.59073"
+ id="text3750-3-6-0"><tspan
+ sodipodi:role="line"
+ id="tspan3748-2-0-2"
+ style="fill:#000000;stroke-width:0.264583"
+ x="179.81555"
+ y="136.59073">$\to \{b\}$</tspan></text>
+ </g>
+</svg>