| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [vb pp] [prep] [v-ing] | 3254 |
|
| 2 | [modal v] be [vb pp] [prep] be | 1071 |
|
| 3 | be [vb pp] [prep] be [v-ing] | 159 |
|
