| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | required a [adj] | 84 |
|
| 2 | required a certain | 6 |
|
| 3 | required a certain | 6 |
|
| 4 | required a new | 5 |
|
| 5 | required a new | 5 |
|
| 6 | required a [adj -er] | 5 |
|
