| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] a [n mass] | 38 |
|
| 2 | who [verb] a series | 17 |
|
| 3 | who [vb -s] a [n mass] | 12 |
|
| 4 | who have a [n mass] | 9 |
|
| 5 | who [verb] a pair | 8 |
|
| 6 | who [vb base] a [n mass] | 8 |
|
| 7 | who has a [n mass] | 5 |
|
