| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but they 've [verb] to | 8 |
|
| 2 | but they 've [vb pp] to | 8 |
|
| 3 | but they 've got to | 6 |
|
| 4 | but they 've get to | 6 |
|
