| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been a member [prep] | 51 |
|
| 2 | has been a member [prep] | 51 |
|
| 3 | has been a member of | 45 |
|
| 4 | has been a member of | 45 |
|
| 5 | has been a member for | 6 |
|
| 6 | has been a member for | 6 |
|
