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  <path d="M 100 250 q 150 -300 300 0 " stroke="blue" stroke-width="5" fill="none" />

  <path d="M 100 350 Q 250 50 400 350 " stroke="blue" stroke-width="5" fill="none" />

  <path d="M 100 350 C 250 150  250 150  400 350 " stroke="blue" stroke-width="5" fill="none" />

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