x="60" y="60" height="15" width="0">
        <animate attributeType="XML" attributeName="width" to="25"
                 id="second" begin="first.end" dur="2s" />
    </rect>

    <rect x="85" y="85" height="15" width="0">
        <animate attributeType="XML" attributeName="width" to="25"
                 id="third" begin="second.end" dur="2s" />
    </rect>

    <!-- grid -->
    <text x="10" y="20" text-anchor="middle">0s</text>
    <line x1="10" y1="25" x2="10" y2="105" stroke="grey" stroke-width=".5" />