| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must have [vb pp] a | 202 |
|
| 2 | [pron] must have [verb] a | 202 |
|
| 3 | [pron] [modal v] have taken a | 61 |
|
| 4 | [pron] must have taken [art] | 24 |
|
| 5 | [pron] must have taken [art] | 24 |
|
| 6 | [pron] must have taken a | 17 |
|
| 7 | [pron] must have take a | 16 |
|
| 8 | [pron] must [verb] taken a | 16 |
|
