| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] | 116381 |
|
| 2 | [pron] be once | 714 |
|
| 3 | [pers pn] be once | 380 |
|
| 4 | it be once | 120 |
|
| 5 | it [be] once | 120 |
|
