Lesson

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 128 128"
>
    <path
        d="m49 81c-1.7 0-3 1.3-3 3s1.3 3 3 3h32c1.7 0 3-1.3 3-3s-1.3-3-3-3z"
    />
    <path
        d="m45 7h64c3.9 0 7 3.1 7 7v60c0 1.7 1.3 3 3 3s3-1.3 3-3v-60c0-7.2-5.8-13-13-13h-64c-1.7 0-3 1.3-3 3s1.3 3 3 3z"
    />
    <path
        d="m9 14c0 7.2 5.8 13 13 13s13-5.8 13-13-5.8-13-13-13-13 5.8-13 13zm20 0c0 3.9-3.1 7-7 7s-7-3.1-7-7 3.1-7 7-7 7 3.1 7 7z"
    />
    <path
        d="m91 37h10c1.7 0 3-1.3 3-3s-1.3-3-3-3h-10c-1.7 0-3 1.3-3 3s1.3 3 3 3z"
    />
    <path
        d="m68 49c0 1.7 1.3 3 3 3h30c1.7 0 3-1.3 3-3s-1.3-3-3-3h-30c-1.7 0-3 1.3-3 3z"
    />
    <path
        d="m89 64c0-1.7-1.3-3-3-3h-25c-1.7 0-3 1.3-3 3s1.3 3 3 3h25c1.7 0 3-1.3 3-3z"
    />
    <path
        d="m99 87h25c1.7 0 3-1.3 3-3s-1.3-3-3-3h-22.1c-.7-4-4.2-7-8.4-7-.1 0-.2 0-.2 0-.1 0-.2 0-.2 0h-6c-1.7 0-3 1.3-3 3s1.3 3 3 3h6 .2.2c1.4 0 2.5 1.1 2.5 2.5v1.5c0 1.7 1.3 3 3 3z"
    />
    <path
        d="m4 77c1.7 0 3-1.3 3-3v-30c0-3.9 3.1-7 7-7h57c1.7 0 3-1.3 3-3s-1.3-3-3-3h-57c-7.2 0-13 5.8-13 13v30c0 1.7 1.3 3 3 3z"
    />
    <path
        d="m4 127h120c1.7 0 3-1.3 3-3s-1.3-3-3-3h-87v-72c0-1.7-1.3-3-3-3s-3 1.3-3 3v72h-6v-39c0-1.7-1.3-3-3-3s-3 1.3-3 3v39h-6v-41.7c0-1.7-1.3-3-3-3s-3 1.3-3 3v41.7h-3c-1.7 0-3 1.3-3 3s1.3 3 3 3z"
    />
    <circle cx="101" cy="64" r="3" />
</svg>