| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] in [art] clean | 9 |
|
| 2 | [be] [vb pp] in [art] clean | 9 |
|
| 3 | [be] [vb pp] in a clean | 7 |
|
| 4 | [be] [vb pp] in a clean | 7 |
|
| 5 | [was/were] [vb pp] in [art] clean | 5 |
|
