| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been on a | 112 |
|
| 2 | had been on a | 39 |
|
| 3 | has been on a | 20 |
|
| 4 | have been on a | 20 |
|
| 5 | have been on an | 16 |
|
| 6 | 've been on a | 13 |
|
| 7 | 's been on a | 11 |
|
| 8 | have been on a | 10 |
|
| 9 | 'd been on a | 6 |
|
| 10 | to have been on a | 5 |
|
