| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when it [be] [verb] | 1501 |
|
| 2 | when it [be] [vb pp] | 1353 |
|
| 3 | [conj] it [be] built | 92 |
|
| 4 | when [pron] [be] built | 25 |
|
| 5 | when it [be] build | 23 |
|
