| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [num] [noun] [prep] | 173 |
|
| 2 | may have been [noun] [prep] | 38 |
|
| 3 | may have been [num] [noun] | 13 |
|
| 4 | may have been [num] [prep] | 11 |
|
| 5 | may have [num] [noun] [prep] | 6 |
|
