| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [be] need [prep] | 45 |
|
| 2 | [adj] research [be] need | 34 |
|
| 3 | research [be] need [prep] | 20 |
|
| 4 | [adj] research [be] [prep] | 20 |
|
| 5 | [adj] research need [prep] | 8 |
|
