| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] than half [art] | 8 |
|
| 2 | at [det] than half [art] | 8 |
|
| 3 | at [adj] than half [art] | 8 |
|
| 4 | at less than half [art] | 8 |
|
| 5 | at less than half [art] | 8 |
|
| 6 | at [adj] than half the | 6 |
|
