| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] an open [noun sg] | 688 |
|
| 2 | and [prep] an [noun sg] | 460 |
|
| 3 | and an open [noun sg] | 39 |
|
| 4 | and [prep] an open | 9 |
|
| 5 | and [prep] open [noun sg] | 8 |
|
