| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] [adv] a year | 33 |
|
| 2 | [adv] [prep] [adv] a year | 33 |
|
| 3 | [adv] [prep] [adv] a year | 33 |
|
| 4 | [adv] [prep] [adv] a year | 33 |
|
| 5 | [adv] [prep] [adv] a year | 22 |
|
| 6 | [adv] for [adv] a year | 21 |
|
| 7 | [adv] for [adv] a year | 21 |
|
| 8 | [adv prt] [prep] [adv] a year | 10 |
|
| 9 | [adv] [prep] over a year | 10 |
|
| 10 | [adv] [prep] over a year | 10 |
|
| 11 | [adv] [prep] about a year | 8 |
|
| 12 | [adv] [prep] about a year | 8 |
|
