| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [verb] [prep] | 81000 |
|
| 2 | be [adv] [v-ing] [prep] | 12671 |
|
| 3 | be [adv] happen [prep] | 101 |
|
| 4 | [be] [adv] happening [prep] | 86 |
|
