| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun pl] [prep] a time | 102 |
|
| 2 | [noun pl] [prep] a long time | 63 |
|
| 3 | [prep] [noun pl] [prep] a long | 19 |
|
| 4 | [prep] [prep] a long time | 8 |
|
