| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [adv] [be] [verb] when | 12 |
|
| 2 | it [modal v] [adv] [be] [vb pp] when | 11 |
|
| 3 | it [modal v] [adv] [be] when [pron] | 6 |
|
| 4 | it [modal v] [adv] [be] when [pers pn] | 6 |
|
