| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to be [v-ing] | 1215 |
|
| 2 | [conj] be [verb] to be | 571 |
|
| 3 | [conj] [verb] to be [v-ing] | 165 |
|
| 4 | [conj] be [verb] to [v-ing] | 23 |
|
