| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [vb pp] [adv] [subord] | 402 |
|
| 2 | [vb pp] [adv] [subord] [to-vb] | 279 |
|
| 3 | [is] [vb pp] [adv] [to-vb] | 238 |
|
