| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] when they [verb] | 823 |
|
| 2 | [adv prt] when they [verb] | 130 |
|
| 3 | back [conj] they [verb] | 92 |
|
| 4 | back when [pron] [verb] | 85 |
|
| 5 | back when they [verb] | 9 |
|
