Infinity SVG

        <svg width="600" height="200" viewbox="-30 -10 60 20" xmlns="http://www.w3.org/2000/svg">
          <path d="M 20 0 C 20 8 10 8 0 0" stroke="black" fill="transparent"/>
          <path d="M 0 0 C -10 -8 -20 -8 -20 0" stroke="black" fill="transparent"/>
        
          <path d="M -20 0 C -20 8 -10 8 0 0" stroke="black" fill="transparent"/>
          <path d="M 0 0 C 10 -8 20 -8 20 0" stroke="black" fill="transparent"/>
        </svg>