| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [been] [vb pp] by a | 25 |
|
| 2 | [v-ing] been [verb] by a | 25 |
|
| 3 | having [been] [verb] by a | 25 |
|
| 4 | [v-ing] [been] [verb] by a | 25 |
|
