| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been on | 52 |
|
| 2 | they [vb past] been on | 32 |
|
| 3 | they had been on | 26 |
|
| 4 | they [vb base] been on | 20 |
|
| 5 | they 've been on | 12 |
|
| 6 | they have been on | 8 |
|
| 7 | they 'd been on | 6 |
|
