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