| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adj] length of time | 112 |
|
| 2 | [art] [adj] length of time | 110 |
|
| 3 | for [art] [adj] length of | 59 |
|
| 4 | for [art] length of time | 9 |
|
