| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [adv] [v-ing] | 534 |
|
| 2 | is [conj] it [is] [adv] | 350 |
|
| 3 | is [conj] it [is] [v-ing] | 17 |
|
| 4 | is it [is] [adv] [v-ing] | 7 |
|
