| I.P.A. Symbols | Exercise a | Exercise b | Exercise c | Exercise d | Totals |
| Correct /i/ /I/ | 296 | 77 | 90 | 36 | 499 |
| Incorrect /i/ /I/ | 64 | 42 | 5 | 6 | 117 |
| Blank /i/ /I/ | 0 | 1 | 1 | 30 | 32 |
| Total of choices | 360 | 120 | 96 | 72 | 648 |
| Total of students 12 | 648 |