| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] within [art] | 229 |
|
| 2 | operate [prep] [prep] [art] | 12 |
|
| 3 | operate [prep] [prep] [art] | 12 |
|
| 4 | operate [prep] within [art] | 8 |
|
| 5 | operate [prep] within [art] | 8 |
|
| 6 | operate [prep] within [art] | 8 |
|
