| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] is in | 38 |
|
| 2 | be [vb pp] [is] in | 17 |
|
| 3 | is [vb pp] [is] in | 11 |
|
| 4 | been [vb pp] [is] in | 6 |
|
