| extremely | 5 | degree |
| for childhood development | 2 | purpose |
| puzzle → be → important | 14 |
| puzzle → be → essential | 4 |
| puzzle → be → crucial | 3 |
| negative | neutral | positive |
| 0.084 | 0.547 | 0.369 |
| Raw frequency | 21 |
| Normalized frequency | 0.335 |
| Modifier score | 0.500 |
| Perplexity | 332.921 |