| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] ['s] [adj] | 656 |
|
| 2 | [prep] a [noun] ['s] practice | 20 |
|
| 3 | a [noun] ['s] [adj] practice | 10 |
|
| 4 | [prep] [noun] ['s] [adj] practice | 8 |
|
