| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than [art] national [noun sg] [prep] | 8 |
|
| 2 | than the national [noun sg] [prep] | 8 |
|
| 3 | than the national [noun sg] [prep] | 8 |
|
| 4 | than [art] national average [prep] | 5 |
|
