| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [v-ing] | 836 |
|
| 2 | is [adv] [v-ing] to | 543 |
|
| 3 | it is [adv] to | 443 |
|
| 4 | it is [v-ing] to | 166 |
|
| 5 | it [adv] [v-ing] to | 11 |
|
