| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [det] than a year | 22 |
|
| 2 | [det] more than a year | 21 |
|
| 3 | little [det] than a year | 14 |
|
| 4 | much [det] than a year | 6 |
|
