| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [verb] been about | 7 |
|
| 2 | it [vb mod] [verb] been about | 7 |
|
| 3 | it must [verb] been about | 5 |
|
| 4 | it must [verb] been about | 5 |
|
| 5 | it [verb] been [vb pp] about | 9 |
|
| 6 | it [verb] been [verb] about | 9 |
|
