| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] it [is] [v-ing] | 342 |
|
| 2 | [noun sg] [is] [v-ing] that | 158 |
|
| 3 | it [is] [v-ing] that | 87 |
|
| 4 | [noun sg] it [is] that | 41 |
|
