| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must be [prep] [pron] [noun] | 13 |
|
| 2 | it must be [prep] [pos pn] [noun] | 13 |
|
| 3 | it must be [prep] [pron] [noun sg] | 9 |
|
| 4 | it must be [prep] his [noun] | 6 |
|
| 5 | it must be [prep] his [noun] | 6 |
|
| 6 | it must be in [pron] [noun] | 5 |
|
