| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a time | 1843 |
|
| 2 | [prep] a long time | 1727 |
|
| 3 | [noun] [prep] a long | 1498 |
|
| 4 | [noun] a long time | 111 |
|
| 5 | [noun] [prep] long time | 5 |
|
