| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] [to-vb] how many | 12 |
|
| 2 | is [adj] [verb] how many | 12 |
|
| 3 | is [adj] [verb] how many | 12 |
|
| 4 | is difficult [verb] how many | 5 |
|
| 5 | is difficult [verb] how many | 5 |
|
