| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to [be] | 91837 |
|
| 2 | [v-ing] [prep] [be] | 11458 |
|
| 3 | [v-ing] [prep] [be] | 9459 |
|
| 4 | [v-ing] to [be] | 8901 |
|
