| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to be | 1678 |
|
| 2 | [vb pp] to be [v-ing] | 1230 |
|
| 3 | be [vb pp] to [v-ing] | 255 |
|
| 4 | be [vb pp] be [v-ing] | 13 |
|
