| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] [noun sg] [prep] | 267556 |
|
| 2 | requires a [adj] [noun sg] | 404 |
|
| 3 | requires a [noun sg] [prep] | 245 |
|
| 4 | requires [adj] [noun sg] [prep] | 93 |
|
