| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in force [prep] [art] time | 22 |
|
| 2 | in force [prep] [art] time | 22 |
|
| 3 | in force [prep] the time | 22 |
|
| 4 | in force at [art] time | 21 |
|
| 5 | in force at [art] time | 21 |
|
