| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been on | 54 |
|
| 2 | it [verb] been on | 54 |
|
| 3 | it [vb -s] been on | 35 |
|
| 4 | it 's been on | 23 |
|
| 5 | it [vb past] been on | 19 |
|
| 6 | it had been on | 19 |
|
| 7 | it has been on | 12 |
|
