| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | often do [verb] a | 6 |
|
| 2 | often do [prep] a | 5 |
|
| 3 | often do [prep] a | 5 |
|
| 4 | often do [vb infin] a | 5 |
|
| 5 | often do a [noun] | 6 |
|
| 6 | often do a [noun sg] | 5 |
|
