| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] do [pron] about | 146 |
|
| 2 | [modal v] do [pron] about | 146 |
|
| 3 | must [verb] [pron] about | 32 |
|
| 4 | must [vb infin] [pron] about | 32 |
|
| 5 | must do [pron] [prep] | 24 |
|
| 6 | must do [pron] about | 11 |
|
| 7 | must do [pron] about | 11 |
|
