<table width="200" border="1"> <tr align="center"> <td>1</td> <td>2</td> <td>3</td> <td>4</td> </tr> <tr align="center"> <td>5</td> <td>6</td> <td>7</td> <td>8</td> </tr> <tr align="center"> <td>9</td> <td>10</td> <td>11</td> <td>12</td> </tr> <tr align="center"> <td colspan="3">13</td> <td>16</td> </tr> </table>