| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [vb pp] [det] | 2212 |
|
| 2 | must have [vb pp] [adj] | 508 |
|
| 3 | must have [verb] [det] | 264 |
|
| 4 | must [verb] [vb pp] [det] | 262 |
|
