| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [prep] [v-ing] | 318 |
|
| 2 | it is [prep] [v-ing] that | 297 |
|
| 3 | is [adv] [prep] [v-ing] that | 59 |
|
| 4 | it is [adv] [v-ing] that | 20 |
|
