| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [v-ing] [to-vb] | 1160 |
|
| 2 | [adv] it be [v-ing] | 873 |
|
| 3 | [adv] be [v-ing] [to-vb] | 328 |
|
| 4 | [adv] it be [to-vb] | 71 |
|
