| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did you [verb] | 8786 |
|
| 2 | did you [vb infin] | 8733 |
|
| 3 | [verb] you buy | 98 |
|
| 4 | do you buy | 87 |
|
| 5 | did [pers pn] buy | 79 |
|
| 6 | did [pron] buy | 79 |
|
| 7 | [vb past] you buy | 57 |
|
| 8 | did you buy | 56 |
|
| 9 | did you buy | 56 |
|
