| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] to be | 20329 |
|
| 2 | to be [v-ing] | 7591 |
|
| 3 | [vb pp] to [v-ing] | 2443 |
|
| 4 | [vb pp] be [v-ing] | 210 |
|
