•twenty-one•

1 Mở đầu 

2 •one• 

3 •two• 

4 •three• 

5 •four• 

6 •five• 

7 •six• 

8 •seven• 

9 •eight• 

10 •nine• 

11 •ten• 

12 •eleven• 

13 •twelve• 

14 •thirteen• 

15 •fourteen• 

16 •fifteen• 

17 •sixteen• 

18 •seventeen• 

19 •eighteen• 

20 •nineteen• 

21 •twenty• 

22 •twenty-one• 

23 •twenty-two• 

24 •twenty-three• 

25 •twenty-four• 

26 •twenty-five• 

27 •twenty-six• 

28 •twenty-seven• 

29 •twenty-eight• 

30 •twenty-nine• 

31 •thirty• 

32 •thirty-one• 

33 •thirty-two• 

34 •thirty-three• 

35 •thirty-four• 

36 •thirty-five• 

37 •thirty-six• 

38 •thirty-seven• 

39 •thirty-eight• 

40 •thirty-nine• 

41 •fourty• 

42 •fourty-one• 

43 •fourty-two• 

44 •fourty-three• 