| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [that] have been [verb] on for | 8 |
|
| 2 | that have [been] [verb] on for | 8 |
|
| 3 | [that] have [been] [v-ing] on for | 7 |
|
| 4 | [that] have [been] going on for | 7 |
|
| 5 | [that] have [been] go on for | 7 |
|
| 6 | [that] has [been] [verb] on for | 5 |
|
