| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been going on for [det] | 8 |
|
| 2 | [vb -s] been going [adv prt] for [det] | 8 |
|
| 3 | [vb -s] been going on for [det] | 8 |
|
| 4 | has been going [adv] for [det] | 7 |
|
