| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] it is often | 23 |
|
| 2 | [prep] [noun sg] it is often | 19 |
|
| 3 | [prep] practice it is often | 7 |
|
| 4 | [prep] practice it is often | 7 |
|
| 5 | [prep] [det] it is often | 5 |
|
| 6 | [prep] [pron] it is often | 5 |
|
| 7 | [prep] [adj] it is often | 5 |
|
