4 embed, iframe, img { border: 1px solid black; width: 25px; height: 25px; }
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8 <div style="width: 30px; border: 1px solid red;">
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9 <input type="text"><input type="text">
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11 <input type="button" value="input"><input type="button" value="input">
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12 <button>button</button><button>button</button>
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13 <select><option>select</option></select><select><option>select</option></select>
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14 <select size="3"><option>select</option></select><select size="3"><option>select</option></select>
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15 <input type="checkbox"><input type="checkbox">
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16 <input type="radio"><input type="radio">
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17 <iframe></iframe><iframe></iframe>
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18 <embed></embed><embed></embed>
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