| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [verb] [prep] | 18129 |
|
| 2 | [vb -s] been [v-ing] [prep] | 1397 |
|
| 3 | [verb] been happening [prep] | 88 |
|
| 4 | [vb -s] be happening [prep] | 65 |
|
| 5 | [vb -s] been happen [prep] | 65 |
|
| 6 | [vb -s] [been] happening [prep] | 65 |
|
| 7 | [vb -s] [be] happening [prep] | 65 |
|
