| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] must [verb] been | 928 |
|
| 2 | [noun] [verb] been one | 254 |
|
| 3 | must [verb] been one | 41 |
|
| 4 | [noun] must [verb] one | 32 |
|
