| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] force at the [noun sg] time | 12 |
|
| 2 | in force at the [noun] time | 12 |
|
| 3 | [prep] force at the material time | 12 |
|
| 4 | [prep] force at the material time | 12 |
|
