| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has been going [adv] for | 15 |
|
| 2 | [noun] has been going on for | 14 |
|
| 3 | [noun] has been going [adv prt] for | 14 |
|
| 4 | [noun] has been going on for | 14 |
|
