| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] [prep] | 135599 |
|
| 2 | [be] [vb pp] clean | 41 |
|
| 3 | [vb pp] clean [prep] | 32 |
|
| 4 | [be] clean [prep] | 7 |
|
