| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] going on [prep] | 176 |
|
| 2 | has [been] going on | 94 |
|
| 3 | has [been] going [prep] | 32 |
|
| 4 | has [been] on [prep] | 6 |
|
