| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there must have been about [adj] | 6 |
|
| 2 | [ex0] must have been about [adj] | 6 |
|
| 3 | [ex0] must have been about [adj] | 6 |
|
| 4 | [ex0] must have been about [num] | 6 |
|
