| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a fixed period [prep] [noun sg] | 21 |
|
| 2 | [prep] a fixed period [prep] [noun sg] | 21 |
|
| 3 | for a fixed period [prep] [noun sg] | 12 |
|
| 4 | for a fixed period [prep] [noun sg] | 12 |
|
| 5 | a fixed period [prep] [noun sg] [coord] | 6 |
|
| 6 | a fixed period [prep] [noun sg] [conj] | 6 |
|
