| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] could only be do [prep] | 5 |
|
| 2 | [adj] could only be do [prep] | 5 |
|
| 3 | could only be do [prep] [art] | 5 |
|
| 4 | could only be do [prep] [art] | 5 |
|
