1.one.first

2.two.second

3.three.third

4.four.fourth

5.five.fifth

6.six.sixth

7.seven.seventh

8.eight.eighth

9.nine.ninth

10.ten.tenth

11.eleven.eleventh

12.twelve.twelfth

13.thirteen.thirteenth

14.fourteen.fourteenth

15.fifteen.fifteenth

16.sixteen.sixteenth

17.seventeen.seventeenth

18.eighteen.eighteenth

19.nineteen.nineteenth

20.twenty.twentieth

21.twenty-one.twenty-first

22.twenty-two.twenty-second

23.twenty-three.twenty-third

24.twenty-four.twenty-fourth

25.twenty-five.twenty-fifth

26.twenty-sixtwenty-sixth

27.twenty-seven.twenty-seventh

28.twenty-eight.twenty-eighth

29.twenty-nine.twenty-ninth

30.thir1ty.thirtieth

31.thirty-onethirty-first