| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did they [adv] [vb infin] [prep] | 15 |
|
| 2 | did they [adv] [vb infin] [prep] | 13 |
|
| 3 | did they ever [vb infin] [prep] | 5 |
|
| 4 | did they ever [vb infin] [prep] | 5 |
|
