| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [was/were] [adv] [prep] | 20610 |
|
| 2 | board [adv] [prep] | 64 |
|
| 3 | board [was/were] [adv] | 63 |
|
| 4 | board [was/were] [prep] | 15 |
|
