| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | demand [prep] a [num] per | 8 |
|
| 2 | demand for a [num] per | 8 |
|
| 3 | demand [prep] a [num] per | 8 |
|
| 4 | demand for a [num] per | 8 |
|
