| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] must [verb] been | 312 |
|
| 2 | [conj] [pron] [verb] been some | 137 |
|
| 3 | [pron] must [verb] been some | 37 |
|
| 4 | [conj] [pron] must [verb] some | 29 |
|
