| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [adv] | 4193 |
|
| 2 | [subord] it is [adv] | 2851 |
|
| 3 | [conj] it is often | 213 |
|
| 4 | [subord] it be often | 102 |
|
| 5 | [subord] it [be] often | 102 |
|
| 6 | [subord] [pron] is often | 98 |
|
| 7 | [subord] it [is] often | 86 |
|
| 8 | [subord] it is often | 74 |
|
