| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | remain [prep] the level of | 9 |
|
| 2 | remain [prep] the level of | 9 |
|
| 3 | remain [prep] the level [prep] | 9 |
|
| 4 | remain at the level [prep] | 8 |
|
| 5 | remain [prep] the level [prep] | 8 |
|
