Hierarchy

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <circle cx="106" cy="106" r="15" />
    <path
        d="M106 151c-24.814 0-45-20.186-45-45s20.186-45 45-45 45 20.186 45 45-20.186 45-45 45c41.367 0 75 33.647 75 75h15V98.5C196 44.652 152.348 0 98.5 0S0 44.652 0 98.5v30c0 29.581 14.453 55.761 35.252 73.641C45.279 172.519 73.025 151 106 151z"
    />
    <path
        d="M61.738 218.705C73.096 223.339 85.476 226 98.5 226H151c0-24.814-20.186-45-45-45-22.317 0-40.75 16.368-44.262 37.705z"
    />
    <circle cx="106" cy="391" r="15" />
    <path
        d="M106 436c-24.814 0-45-20.186-45-45s20.186-45 45-45 45 20.186 45 45-20.186 45-45 45c41.367 0 75 34.647 75 76h15V383.5c0-53.848-43.652-97.5-97.5-97.5S1 329.652 1 383.5v30c0 29.581 13.453 55.761 34.252 73.641C45.279 457.519 73.025 436 106 436z"
    />
    <path
        d="M106 466c-22.317 0-40.75 17.368-44.262 38.705C73.096 509.339 85.476 512 98.5 512H151c0-24.814-20.186-46-45-46z"
    />
    <circle cx="406" cy="256" r="15" />
    <path
        d="M413.5 151c-53.848 0-97.5 43.652-97.5 97.5V376h15c0-41.353 33.633-75 75-75-24.814 0-45-20.186-45-45s20.186-45 45-45 45 20.186 45 45-20.186 45-45 45c32.975 0 60.721 21.519 70.748 51.141C497.547 334.261 512 308.081 512 278.5v-30c0-53.848-44.652-97.5-98.5-97.5z"
    />
    <path
        d="M406 331c-24.814 0-45 20.186-45 45h52.5c13.024 0 25.404-2.661 36.762-7.295C446.75 347.368 428.317 331 406 331zM226 0h60v512h-60z"
    />
</svg>