| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been going on [prep] | 176 |
|
| 2 | [vb -s] been going on | 160 |
|
| 3 | [vb -s] been going [prep] | 61 |
|
| 4 | [vb -s] been on [prep] | 15 |
|
| 5 | [vb -s] going on [prep] | 10 |
|
