| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so there must [be] [pron] | 6 |
|
| 2 | so there must [be] [indef pn] | 6 |
|
| 3 | so there must [be] a | 5 |
|
| 4 | so there must [be] [art] | 5 |
|
| 5 | so there must [be] [art] | 5 |
|
