| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [adv prt] in [art] | 10 |
|
| 2 | must be [vb pp] [adv prt] in [art] | 8 |
|
| 3 | must be [verb] [adv prt] in the | 6 |
|
| 4 | must be [verb] [adv prt] in the | 6 |
|
