| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] when it is [verb] | 89 |
|
| 2 | [adv] when it is [vb pp] | 79 |
|
| 3 | [adv] [conj] it is needed | 8 |
|
| 4 | [adv] when it [be] needed | 6 |
|
| 5 | [adv] when it be needed | 6 |
|
| 6 | [adv] when it is need | 5 |
|
| 7 | [adv] when [pron] is needed | 5 |
|
| 8 | [adv] when it [is] needed | 5 |
|
