| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a [noun] [prep] time | 186 |
|
| 2 | a long [noun] [prep] time | 128 |
|
| 3 | over a long [noun] [prep] | 94 |
|
| 4 | over long [noun] [prep] time | 19 |
|
