| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the back [pron] could | 6 |
|
| 2 | [art] back [pron] could | 6 |
|
| 3 | the back [pron] could | 6 |
|
| 4 | [art] back [pron] could | 6 |
|
| 5 | back [conj] [pron] could | 6 |
|
| 6 | back [pron] could [adv] | 6 |
|
