| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been going [adv] [prep] | 19 |
|
| 2 | which have been going on [prep] | 17 |
|
| 3 | which have been going on [prep] | 17 |
|
| 4 | which have been going [adv prt] [prep] | 17 |
|
