| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | open its door [prep] the first | 5 |
|
| 2 | open its door for the first | 5 |
|
| 3 | open its doors [prep] the first | 5 |
|
| 4 | open its door for the first | 5 |
|
| 5 | open its door [prep] the first | 5 |
|
