| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [be] [verb] for | 526 |
|
| 2 | which [be] [vb pp] for | 475 |
|
| 3 | which [be] required [prep] | 58 |
|
| 4 | which [be] required [prep] | 58 |
|
| 5 | [pron] [be] required for | 45 |
|
| 6 | [Wh det] [be] required for | 31 |
|
| 7 | which [be] require for | 18 |
|
| 8 | which [be] required for | 18 |
|
| 9 | which [be] required for | 18 |
|
