| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] than the [adj] average | 7 |
|
| 2 | [det] than [art] [adj] average | 7 |
|
| 3 | [det] than the [adj] average | 7 |
|
| 4 | [det] than [art] national average | 5 |
|
