| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to [be] [prep] a | 848 |
|
| 2 | [be] to [be] a | 642 |
|
| 3 | [be] to [be] [prep] | 312 |
|
| 4 | [be] [be] [prep] a | 11 |
|
