eleven

1 one 

2 two 

3 three 

4 four 

5 five 

6 six 

7 seven 

8 eight 

9 nine 

10 ten 

11 eleven 

12 mừ hai (tại số 12 t.anh tg ko bt=)) 

13 thirteen 

14 forteen 

15 fifteen 

16 sixteen 

17 seventeen 

18 eighteen 

19 nineteen 

20 twenty 