| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been on | 54 |
|
| 2 | it have [been] on | 54 |
|
| 3 | it 's [been] on | 23 |
|
| 4 | it had [been] on | 19 |
|
| 5 | it has [been] on | 12 |
|
