| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they used [prep] [be] | 208 |
|
| 2 | used [prep] [be] [noun] | 170 |
|
| 3 | they [prep] [be] [noun] | 32 |
|
| 4 | they used [prep] [noun] | 6 |
|
