| yellow | Unit 12 | Lesson 101 |
| yellow | Unit 12 | Lesson 102 |
| blue | Unit 7 | Lesson 138 |
| blue | Unit 8 | Lesson 145 |
| green | Unit 11 | Lesson 204 |
| green | Unit 12 | Lesson 207 |
| green | Unit 12 | Lesson 210 |
| orange | Unit 6 | Lesson 235 |
| orange | Unit 6 | Lesson 236 |
| orange | Unit 9 | Lesson 248 |
| bronze | Unit 8 | Lesson 353 |
| red | Unit 6 | Lesson 24 |
| red | Unit 6 | Lesson 25 |
| red | Unit 6 | Lesson 26 |