| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been members [prep] | 17 |
|
| 2 | [vb past] been members [prep] | 17 |
|
| 3 | [vb past] been members of | 15 |
|
| 4 | [vb past] been members of | 15 |
|
