| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must be [pos pn] [noun] | 25 |
|
| 2 | it must be [pos pn] [noun] | 25 |
|
| 3 | it must be [pos pn] [noun sg] | 21 |
|
| 4 | it must be his [noun] | 9 |
|
| 5 | it must be your [noun] | 5 |
|
