| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] to be | 17811 |
|
| 2 | [be] [v-ing] [prep] be | 6911 |
|
| 3 | [be] [v-ing] [prep] be | 5489 |
|
| 4 | [be] [v-ing] to be | 5104 |
|
| 5 | [be] [v-ing] to [be] | 5104 |
|
