| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [prep] | 70805 |
|
| 2 | [vb pp] [prep] be | 22229 |
|
| 3 | is [prep] be | 6043 |
|
| 4 | is [vb pp] be | 818 |
|
