| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before they [vb past] the | 109 |
|
| 2 | before they [vb past] the | 109 |
|
| 3 | before they reached the | 28 |
|
| 4 | before they left the | 13 |
|
| 5 | before they hit the | 5 |
|
| 6 | before they heard the | 5 |
|
