| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] a big | 19 |
|
| 2 | [vb mod] have been a big | 19 |
|
| 3 | [vb mod] have [been] a big | 18 |
|
| 4 | must have [been] a big | 9 |
|
