| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be about [to-vb] [noun sg] | 105 |
|
| 2 | be about [to-vb] on | 89 |
|
| 3 | be [to-vb] on [noun sg] | 55 |
|
| 4 | about [to-vb] on [noun sg] | 22 |
|
