| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [prep] [det] | 3559 |
|
| 2 | to be [v-ing] [prep] | 1895 |
|
| 3 | to be [prep] [det] | 597 |
|
| 4 | to be [v-ing] [det] | 322 |
|
| 5 | to [v-ing] [prep] [det] | 84 |
|
