| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] a [det] week | 98 |
|
| 2 | [noun sg] [prep] [det] week ['s] | 64 |
|
| 3 | [noun sg] [prep] a week ['s] | 33 |
|
| 4 | [prep] a [det] week ['s] | 29 |
|
