| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [be] [vb pp] about | 16 |
|
| 2 | [vb mod] have [been] [vb pp] about | 16 |
|
| 3 | [vb mod] have be [vb pp] about | 16 |
|
| 4 | [vb mod] have been [vb pp] about | 16 |
|
| 5 | [vb mod] have [be] [vb pp] about | 14 |
|
| 6 | should have [be] [vb pp] about | 5 |
|
