| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [verb] a | 7585 |
|
| 2 | which [vb base] a | 1414 |
|
| 3 | which require a | 130 |
|
| 4 | [pron] require a | 126 |
|
| 5 | which require [art] | 56 |
|
