| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been on | 407 |
|
| 2 | has been on | 245 |
|
| 3 | have been on | 165 |
|
| 4 | 've been on | 150 |
|
| 5 | have been on | 147 |
|
| 6 | 's been on | 92 |
|
| 7 | 'd been on | 58 |
|
| 8 | to have been on | 33 |
|
| 9 | having been on | 21 |
|
