| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | mean [pers pn] must have [been] | 12 |
|
| 2 | mean [pers pn] must [vb infin] [been] | 12 |
|
| 3 | mean [pers pn] must [vb infin] been | 12 |
|
| 4 | means [pers pn] must [vb infin] [been] | 6 |
|
| 5 | mean you must [vb infin] [been] | 5 |
|
