| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [vb pp] a | 390 |
|
| 2 | must have [verb] a | 390 |
|
| 3 | [vb mod] have cost a | 25 |
|
| 4 | [modal v] have cost a | 25 |
|
| 5 | must have cost [art] | 19 |
|
| 6 | must have cost a | 18 |
|
| 7 | must [vb infin] cost a | 18 |
|
| 8 | must [verb] cost a | 18 |
|
| 9 | must have cost a | 17 |
|
| 10 | must have cost a | 17 |
|
