| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once it is [vb pp] that [art] | 16 |
|
| 2 | once it [is] [vb pp] that [art] | 16 |
|
| 3 | once it [is] [vb pp] that [art] | 16 |
|
| 4 | once it [is] [vb pp] that the | 12 |
|
| 5 | once it [is] [vb pp] that the | 12 |
|
