| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [prep] [num ord] | 21 |
|
| 2 | who [prep] [num ord] | 21 |
|
| 3 | who [prep] first | 18 |
|
| 4 | who at [num ord] | 17 |
|
| 5 | who at [num ord] | 17 |
|
