| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] to | 32 |
|
| 2 | [vb mod] have be to | 32 |
|
| 3 | [vb mod] have [be] to | 32 |
|
| 4 | [vb mod] have been to | 32 |
|
| 5 | [vb mod] have [be] to | 31 |
|
| 6 | would have [be] to | 15 |
|
| 7 | must have [be] to | 8 |
|
