| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [modal v] a [noun sg] | 208 |
|
| 2 | [Wh adv] should [art] [noun sg] | 135 |
|
| 3 | [adv] should a [noun sg] | 57 |
|
| 4 | [Wh adv] should a [noun] | 47 |
|
