| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adj] practice [verb] [noun] | 8 |
|
| 2 | it be [adj] practice [verb] [noun] | 8 |
|
| 3 | it be [adj] practice [to-vb] [noun] | 8 |
|
| 4 | it be [adj] practice [verb] [noun] | 8 |
|
| 5 | it be common practice [verb] [noun] | 5 |
|
| 6 | it be common practice [verb] [noun] | 5 |
|
