| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] | 79370 |
|
| 2 | it [is] [adv] | 53318 |
|
| 3 | [pron] [is] usually | 1135 |
|
| 4 | it [be] usually | 723 |
|
| 5 | it [is] usually | 634 |
|
