| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | began [to-vb] on the | 51 |
|
| 2 | begin to appear on the | 14 |
|
| 3 | begun [to-vb] on the | 13 |
|
| 4 | beginning [to-vb] on the | 9 |
|
| 5 | begin to work on the | 7 |
|
