| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] should [vb infin] [prep] [art] | 792 |
|
| 2 | [pron] [vb infin] back [prep] [art] | 89 |
|
| 3 | [pron] should [vb infin] back [prep] | 40 |
|
| 4 | should [vb infin] back [prep] [art] | 26 |
|
