| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [n mass] could [vb infin] their | 12 |
|
| 2 | [n mass] could [verb] their | 12 |
|
| 3 | [n mass] could [verb] their | 12 |
|
| 4 | people could [verb] their | 7 |
|
