| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] than a | 982 |
|
| 2 | [vb past] [prep] [det] a | 194 |
|
| 3 | [vb past] [det] than a | 172 |
|
| 4 | [vb past] [prep] [det] than | 88 |
|
