| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [verb] to be | 286 |
|
| 2 | it [adv] [vb past] to be | 74 |
|
| 3 | [pron] [adv] happened to be | 47 |
|
| 4 | it [adv] happen to be | 27 |
|
| 5 | it [adv] happened to [be] | 6 |
|
| 6 | it [adv] happened [prep] be | 6 |
|
