| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] should [vb infin] [prep] a | 13 |
|
| 2 | [Wh det] should [verb] [prep] a | 13 |
|
| 3 | [Wh det] should [verb] [prep] a | 13 |
|
| 4 | which should [verb] [prep] a | 10 |
|
| 5 | [Wh det] should [verb] [prep] a | 9 |
|
