| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] [that] | 1289 |
|
| 2 | it is [adv] [verb] [that] | 1206 |
|
| 3 | it is often [verb] [conj] | 163 |
|
| 4 | it be often [verb] [that] | 163 |
|
| 5 | it [be] often [verb] [that] | 163 |
|
| 6 | it [is] often [verb] [that] | 154 |
|
| 7 | [pron] is often [verb] [that] | 151 |
|
| 8 | it is often [verb] [that] | 150 |
|
