1) | 1 1 1- + - 5 9 | 2) | 1 1 3- -  4- 6 9 |
3) | 1 1 1- + - 2 5 | 4) | 1 1 3- -  4- 6 9 |
5) | 1 1 2- + - 4 11 | 6) | 1 1 3- -  2- 8 9 |
7) | 1 1 1- + - 6 3 | 8) | 1 1 3- -  2- 4 3 |
9) | 1 1 2- + - 4 5 | 10) | 1 1 2- -  3- 8 9 |
11) | 1 1 2- + - 3 8 | 12) | 1 1 1- -  4- 9 8 |
13) | 1 1 2- + - 2 7 | 14) | 1 1 3- -  2- 5 3 |
15) | 1 1 2- + - 5 4 | 16) | 1 1 1- -  2- 5 6 |
17) | 1 1 2- + - 6 12 | 18) | 1 1 1- -  3- 8 5 |
19) | 1 1 1- + - 4 7 | 20) | 1 1 3- -  3- 9 9 |
21) | 1 1 2- + - 4 12 | 22) | 1 1 4- -  3- 8 4 |
Joke:
If your father was a mathematician, he would warn you in the form of 'I told you n times; and I told you n+1 times' and so on!