| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have been think | 61 |
|
| 2 | [vb mod] have been thought | 37 |
|
| 3 | [vb mod] have been thinking | 25 |
|
| 4 | might have been think | 21 |
|
| 5 | must have been think | 12 |
|
| 6 | would have been think | 12 |
|
| 7 | should have been think | 8 |
|
| 8 | may have been think | 5 |
|
