| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] | 71140 |
|
| 2 | to be [prep] | 9097 |
|
| 3 | to be [v-ing] | 7591 |
|
| 4 | to [v-ing] [prep] | 2067 |
|
