| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to be [v-ing] [prep] | 1303 |
|
| 2 | be [verb] to be [prep] | 1237 |
|
| 3 | be [verb] to be [v-ing] | 1215 |
|
| 4 | be [verb] to [v-ing] [prep] | 125 |
|
| 5 | be to be [v-ing] [prep] | 18 |
|
