| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [adv] [conj] | 876 |
|
| 2 | [vb pp] [adv] [conj] [to-vb] | 294 |
|
| 3 | is [vb pp] [adv] [to-vb] | 223 |
|
| 4 | is [vb pp] [conj] [to-vb] | 26 |
|
