| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been going [adv prt] for a | 9 |
|
| 2 | have [been] going [adv prt] for a | 9 |
|
| 3 | have [been] going on for a | 8 |
|
| 4 | has [been] going [adv prt] for a | 6 |
|
