| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [be] [prep] [det] | 26 |
|
| 2 | have [be] [indef pn] [prep] [det] | 20 |
|
| 3 | must have [be] [indef pn] [prep] | 20 |
|
| 4 | must [be] [indef pn] [prep] [det] | 8 |
|
