| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than [adv] [art] [num] year | 6 |
|
| 2 | than [adv] [art] [num] year | 6 |
|
| 3 | than once [art] [num] year | 5 |
|
| 4 | than [adv] every [num] year | 5 |
|
| 5 | than [adv] every [num] year | 5 |
|
| 6 | than [adv] [art] [num] years | 5 |
|
