| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a member | 140 |
|
| 2 | has been a member | 54 |
|
| 3 | had been a member | 54 |
|
| 4 | have been a member | 11 |
|
| 5 | have been a member | 8 |
|
