| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it [is] [adv] [v-ing] | 534 |
|
| 2 | [to-vb] [conj] it [is] [adv] | 280 |
|
| 3 | [to-vb] [conj] it [is] [v-ing] | 38 |
|
| 4 | [to-vb] it [is] [adv] [v-ing] | 6 |
|
