| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] length of | 217 |
|
| 2 | [prep] [adj] length of time | 136 |
|
| 3 | [art] [adj] length of time | 110 |
|
| 4 | [prep] [art] length of time | 93 |
|
