| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [to-vb] at [art] | 276 |
|
| 2 | be begin [to-vb] [prep] [art] | 140 |
|
| 3 | [be] begin [to-vb] at [art] | 5 |
|
| 4 | be begin [verb] at [art] | 5 |
|
