| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] should [verb] [prep] a | 184 |
|
| 2 | [vb pp] [pron] [verb] [prep] a | 151 |
|
| 3 | [vb pp] [pron] should [verb] [prep] | 19 |
|
| 4 | [vb pp] [pron] should [verb] a | 7 |
|
