| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] [prep] [art] | 217 |
|
| 2 | must have [vb pp] [prep] [art] | 217 |
|
| 3 | [modal v] have [vb pp] at [art] | 103 |
|
| 4 | must have [verb] at [art] | 14 |
|
| 5 | must [vb infin] [vb pp] at [art] | 13 |
|
| 6 | must have [vb pp] at [art] | 13 |
|
| 7 | must [verb] [vb pp] at [art] | 13 |
|
| 8 | must have [vb pp] at [art] | 13 |
|
