| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the national [noun sg] | 388 |
|
| 2 | at the national [noun sg] | 388 |
|
| 3 | at the national gallery | 70 |
|
| 4 | at the national level | 62 |
|
| 5 | at the national theatre | 23 |
|
| 6 | at the national exhibition | 19 |
|
| 7 | at the national institute | 16 |
|
| 8 | at the national portrait | 16 |
|
| 9 | at the national museum | 15 |
|
| 10 | at the national library | 11 |
|
| 11 | at the national stadium | 9 |
|
| 12 | at the national hospital | 8 |
|
| 13 | at the national eisteddfod | 6 |
|
| 14 | at the national tramway | 6 |
|
| 15 | at the national railway | 5 |
|
