| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at least once [prep] the | 18 |
|
| 2 | [prep] least once [prep] the | 18 |
|
| 3 | at least once [prep] the | 18 |
|
| 4 | [prep] least once [prep] the | 18 |
|
| 5 | [prep] least once [prep] the | 18 |
|
| 6 | [prep] least once during the | 6 |
|
| 7 | [prep] least once during the | 6 |
|
| 8 | [prep] least once in the | 6 |
|
| 9 | [prep] least once in the | 6 |
|
