| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be to [be] | 15395 |
|
| 2 | be [v-ing] to | 14228 |
|
| 3 | [v-ing] to [be] | 8901 |
|
| 4 | be [v-ing] [be] | 1899 |
|
