| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [to-vb] | 4016 |
|
| 2 | be begin [to-vb] | 2419 |
|
| 3 | [adv] begin [to-vb] | 1795 |
|
| 4 | be [adv] begin | 517 |
|
