| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] must be [prep] | 18 |
|
| 2 | [conj] must [be] [prep] | 18 |
|
| 3 | [conj] must be [prep] | 18 |
|
| 4 | [coord] must [be] [prep] | 12 |
|
| 5 | and must [be] [prep] | 10 |
|
| 6 | and must [be] [prep] | 10 |
|
| 7 | [conj] must [be] in | 6 |
|
