| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | then set off [prep] | 19 |
|
| 2 | then set off [prep] | 19 |
|
| 3 | then set off [prep] | 19 |
|
| 4 | then set off on | 5 |
|
| 5 | then set off for | 5 |
|
| 6 | then set off on | 5 |
|
| 7 | then set off for | 5 |
|
