| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [det] [noun sg] | 872 |
|
| 2 | must [verb] [det] [noun sg] | 507 |
|
| 3 | must [verb] been [det] | 93 |
|
| 4 | must [verb] been [noun sg] | 47 |
|
