| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [det] length [prep] time | 112 |
|
| 2 | for [det] length of time | 112 |
|
| 3 | for [det] length [prep] time | 112 |
|
| 4 | for [det] length of time | 112 |
|
| 5 | for any length [prep] time | 96 |
|
| 6 | for that length [prep] time | 10 |
|
