| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [is] needed | 24 |
|
| 2 | [Wh adv] it is needed | 18 |
|
| 3 | where it [is] needed | 11 |
|
| 4 | [Wh adv] it 's needed | 6 |
|
| 5 | whenever it [is] needed | 5 |
|
