| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun] [conj] [is] often used | 6 |
|
| 2 | [noun] [conj] [is] often used [prep] | 7 |
|
| 3 | [noun] [conj] [is] often used [prep] | 7 |
|
