| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] to be [vb pp] | 2235 |
|
| 2 | [v-ing] to be a | 1154 |
|
| 3 | to be [vb pp] a | 522 |
|
| 4 | [v-ing] be [vb pp] a | 34 |
|
