| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [Wh det] [pers pn] should [vb infin] | 18 |
|
| 2 | on which [pers pn] should [verb] | 9 |
|
| 3 | on what [pers pn] should [verb] | 9 |
|
| 4 | on [Wh det] we should [verb] | 5 |
|
