| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] practice [to-vb] [prep] | 9 |
|
| 2 | it be [adj] practice [verb] [prep] | 9 |
|
| 3 | it be [adj] practice [verb] [prep] | 8 |
|
| 4 | it is [adj] practice [verb] [prep] | 7 |
|
