| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while [prep] the same time maintain | 7 |
|
| 2 | while [prep] [art] same time maintain | 7 |
|
| 3 | while at [art] same time maintain | 7 |
|
| 4 | while [prep] the same time maintain | 7 |
|
| 5 | while [prep] [art] same time maintain | 7 |
|
| 6 | while [prep] [art] same time maintaining | 6 |
|
