| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] must [verb] [verb] a | 217 |
|
| 2 | [pron] must [verb] [vb pp] a | 202 |
|
| 3 | [pron] [modal v] [verb] taken a | 61 |
|
| 4 | [pron] must [verb] taken [art] | 24 |
|
| 5 | [pron] must [verb] taken [art] | 24 |
|
| 6 | [pron] must [verb] taken a | 17 |
|
| 7 | [pron] must [verb] take a | 16 |
|
