| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [prep] | 9097 |
|
| 2 | [v-ing] to be | 8901 |
|
| 3 | [v-ing] be [prep] | 399 |
|
| 4 | [v-ing] to [prep] | 155 |
|
