| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [pron] [v-ing] | 12613 |
|
| 2 | be [pron] [prep] | 10990 |
|
| 3 | [pron] [prep] [v-ing] | 8730 |
|
| 4 | be [prep] [v-ing] | 5741 |
|
