1 one<br>2 two<br>3 three<br>4 four<br>5 five<br>6 six<br>7 seven<br>8 eight<br>9 nine<br>10 ten<br>11 eleven<br>12 twelve<br>13 thirteen<br>14 fourteen<br>15 fifteen<br>16 sixteen<br>17 seventeen<br>18 eighteen<br>19 nineteen<br>20 twenty