| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | areas [pron] need to be | 5 |
|
| 2 | areas which need to be | 5 |
|
| 3 | areas [Wh det] need to be | 5 |
|
| 4 | areas which need to be | 5 |
|
| 5 | areas need to be [vb pp] | 6 |
|
| 6 | areas need to be [verb] | 6 |
|
