| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [prep] a | 15457 |
|
| 2 | [prep] a week | 1699 |
|
| 3 | [noun prp] a week | 87 |
|
| 4 | [noun prp] [prep] week | 26 |
|
