| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] there must be [pron] [prep] | 8 |
|
| 2 | [adv] there must [be] [pron] [prep] | 8 |
|
| 3 | [adv] there must [be] [pron] [prep] | 8 |
|
| 4 | [adv] there must [be] [indef pn] [prep] | 8 |
|
| 5 | [adv] there must [be] something [prep] | 6 |
|
| 6 | [adv] there must [be] something [prep] | 6 |
|
