| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [vb pp] clean | 20 |
|
| 2 | [modal v] [be] [vb pp] clean | 20 |
|
| 3 | [prep] [be] [vb pp] clean | 17 |
|
| 4 | to [be] [vb pp] clean | 16 |
|
| 5 | to [be] [vb pp] clean | 16 |
|
| 6 | [prep] [be] [vb pp] clean | 16 |
|
| 7 | must [be] [vb pp] clean | 7 |
|
| 8 | must [be] [vb pp] clean | 7 |
|
| 9 | [adv] [be] [vb pp] clean | 5 |
|
| 10 | [be] [vb pp] clean [conj] | 11 |
|
| 11 | [be] [vb pp] clean and | 9 |
|
| 12 | [be] [vb pp] clean [coord] | 9 |
|
| 13 | [be] [vb pp] clean and | 9 |
|
| 14 | [be] [vb pp] clean [prep] | 9 |
|
| 15 | [be] [vb pp] clean [prep] | 9 |
|
