| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have been [adj] | 437 |
|
| 2 | [pron] [modal v] have been some | 87 |
|
| 3 | [pron] must have been some | 37 |
|
| 4 | [pron] must [verb] been some | 37 |
|
| 5 | [pron] must [vb infin] been some | 37 |
|
| 6 | [pron] must have be some | 36 |
|
| 7 | [pron] must have [be] some | 36 |
|
| 8 | [pron] must have [been] some | 36 |
|
