| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | open up a | 231 |
|
| 2 | opened up a | 69 |
|
| 3 | opening up a | 44 |
|
| 4 | to open up a | 37 |
|
| 5 | opened up a | 32 |
|
| 6 | opens up a | 29 |
|
| 7 | open up a | 26 |
|
| 8 | open up an | 22 |
|
| 9 | open up a | 16 |
|
