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