| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but when [pron] is [vb pp] | 19 |
|
| 2 | but when [pers pn] is [vb pp] | 18 |
|
| 3 | but when it is [vb pp] | 16 |
|
| 4 | but when it is [vb pp] | 16 |
|
