| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] [det] [noun] | 1956 |
|
| 2 | used [prep] [det] [noun] | 994 |
|
| 3 | is used [prep] [noun] | 355 |
|
| 4 | is used [prep] [det] | 123 |
|
