| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] on a | 6611 |
|
| 2 | [is] [vb pp] on | 4738 |
|
| 3 | [is] [vb pp] a | 1374 |
|
| 4 | [is] on a | 399 |
|
