| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [verb] [prep] a | 3529 |
|
| 2 | how [pron] [modal v] [verb] [prep] | 362 |
|
| 3 | how [pron] [modal v] [verb] a | 67 |
|
| 4 | how [pron] [verb] [prep] a | 56 |
|
