| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [prep] [art] | 3146 |
|
| 2 | [v-ing] to be [art] | 1471 |
|
| 3 | [v-ing] to be [prep] | 456 |
|
| 4 | [v-ing] to [prep] [art] | 47 |
|
