| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [to-vb] [conj] | 2413 |
|
| 2 | [to-vb] [conj] [v-ing] | 564 |
|
| 3 | be [conj] [v-ing] | 329 |
|
| 4 | be [to-vb] [v-ing] | 326 |
|
